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  • RY4 E-Liquid RY4 E-Liquid
  • RY4 E-Liquid RY4 E-Liquid

Apollo RY4 E-Liquid

98 17 100 0

Quick Overview

This full-bodied tobacco flavor includes sweet hints of warm caramel and smooth vapor finish.

Availability: In stock


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One of the most popular flavors in the e-cigarette world is RY4. This full-bodied tobacco flavor includes sweet hints of warm caramel and smooth vapor finish. An unforgettable flavor for sure, and our blend is an instant fan favorite.

  1. My Choice review by Darrell H on 4/19/2017
    Overall rating

    I've tried other flavors but, this has always been my favorite. Nice and mild and very satisfying.

  2. Great all around device review by Steve M on 6/10/2016
    Overall rating

    I was a little timid on getting this kit as the price was a bit on the high side but there are no regrets so far! This mod fits great in my hand and hits like a Mack truck. The battery charger that comes with it charges fast - major plus.
    Very happy with this device!

  3. Best RY4 review by Michael Metcalf on 2/12/2015
    Overall rating

    My daily vape ...everyday !

  4. Outstanding RY4! review by Karen on 2/6/2015
    Overall rating

    I won a bottle of this RY4 in a FB contest.(Thanks, Apollo!) Had to come back and get a big bottle. I've been vaping for 5 years and for me, this is the best RY4 out there. Really great tobacco flavor and caramel. It seems to have a hint of molasses which makes it even more enjoyable. Great TH and clouds. ADV for me....never got tired of it like I have with other juices. Just get it...I think you will love it. too.

  5. Not too sweet review by Anne Carrick on 10/5/2014
    Overall rating

    This has a nice blend of tobacco and caramel. The finish is sweet, but not too sweet. The liquid does taste alot like the standard tobacco, but it's not as sweet as that one. I would order this again.

  6. Amazing review by Stephen Mills on 6/7/2014
    Overall rating

    Can't believe I never left a review for this liquid. It is by far one of the best I have ever tried. Has an amazing caramel taste. I have been vaping it daily for two months now and still cannot think of a single thing wrong with it. It is one of my all day vapes for sure.

  7. sweet and subtle review by Nick on 4/6/2014
    Overall rating

    a nice light ry4 that can be vaped or mixed with other flavors.

    the bottle the liquid came in absolutely rocks!! the dropper tip is perfect for filling tanks

    shipping was fast. i ordered wednesday night and got it in the mail saturday (3 days)

    4 stars for the flavor of the liquid. im adding the extra star for the fast shipping, the promotional offer, and also the nice bottle

  8. This is it! review by Brent Murphy on 3/28/2014
    Overall rating

    I've tried a handful of E-liquids and I must say than none have compared to this flavor. I've been trying to find a go-to flavor that I can vape day after day and not get tired of, this is it! This is so smooth, but also has a delicious rich flavor. It tastes like perfectly flavored tobacco with a mix of caramel. I'm so happy to have given this a try. It's now the only blend I vape. I highly recommend!

  9. Happy At Long Last! review by Therese Kibbler on 1/7/2014
    Overall rating

    I just received RY4 today, and I am VERY pleased! I have tried several different e-juice flavors, and NONE have even compared to RY4! Very smooth taste, with just a hint of caramel. Love it! I have finally found the right flavor for me!

  10. Awesome! review by chris corder on 11/29/2013
    Overall rating

    Vanilla, Caramel & Tobacco all rolled into one. I've not come close to any juice tasting like a cig, but this is the closest I've come. I love this one! Just the perfect amount of vanilla and caramel, make this another one of my favs. Sent some to my daughter, and she recieved it today, and she loves it!

  11. My favorite review by Judy on 11/9/2013
    Overall rating

    Just received the RY4. Holy mackerel!!! This one is so tasty. The only way I can describe it is, tobacco, vanilla, caramel flavor all rolled into one e liquid. It's so good, I have to use the 6mg nicotine level or I'd be taking in more nicotine than I want. Try this'll love it!!!

  12. Innovative review by Tom on 11/2/2013
    Overall rating

    I have only tried two liquids. I like this one a lot. It is almost sweet, but still tastes like a tobacco cigarette. Leaves a nice taste in the mouth and lets off very little smell. Can't think of a cigarette to compare to it but it satisfies the urge and pleases the taste buds.

  13. LOVE IT, my first, last, and always! review by Lisa Lampman-LaBelle on 11/2/2013
    Overall rating

    This is my favorite, and always will be. It's the first e liquid flavor I ever tried, and to date is still my fav after trying about 25 different flavors. Love the slight sweet caramel with just a teeny tiny hint of vanilla. I vape this one 90% of the time.

  14. My favorite, hands down review by Mike F on 11/2/2013
    Overall rating

    This was one of the first e-liquids I tried and I love it. Tried some RY4 from a few different places after reading great reviews about them, but none of them were as good as Apollo's even after weeks of steeping. About to order another 30ml bottle right after writing this review.

  15. The best !!! review by Anthony Cirullo on 11/2/2013
    Overall rating

    Tony AKA honestvape here. I have done a few reviews on different Ejuices and tried a bunch. This is my favorite RY4 to date.

  16. first juice, still my favorite review by c.wargo on 6/17/2013
    Overall rating

    i must have lucked out when i bought this as my first juice, as its still my all day vape. nothing in here is overpowering. everything is blended very nicely. you get the tobacco, caramel and vanilla in a great tasting, and esp. great smelling vape.
    would love to see the option for additional flavors, or maybe an all VG version for people sensitive to PG, because more people should experience this fantastic juice. you guys have made a real winner with this one.

  17. Superb!! review by Alex on 6/17/2013
    Overall rating

    Awesome flavor, great vapor, is a daily vape choice for me, can taste a sweet and smooth carmel flavor. Very Good.

Write Your Own Review

You're reviewing: Apollo RY4 E-Liquid

How do you rate this product? *

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Overall rating

PG / VG content of your E-Liquid

50 / 50 For those who like an intense flavour as well as a throat hit.

20 / 80 Smoother inhale with bigger clouds and a mild flavor.

PG stands for Propylene Glycol, a thin, odourless and tasteless liquid used safely for more than 50 years in food.

VG stands for Vegetable Glycerin, a natural organic glycerol that is made out of vegetable oil. The VG is a thick, odourless, and sweet-tasting liquid.

Apollo e-liquids are guaranteed contaminate free. All flavors are made with: USP Grade PG and VG, Food Safe Ingredients, Laboratory Grade Nicotine.


Eliquid Nicotine content guidance for smokers

0mg (0%) Just for flavor. No nicotine content.

3mg (0.3%) For light smokers or those who are not craving for nicotine

6mg (0.6%) For light smokers who still want to feel a little nicotine.

Warning! do not use the following nicotine concentrations in Sub-Ohm Tanks

12mg (1.2%) Smoking on average 10 cigars a day? This is your nicotine concentration choice

18mg (1.8%) Heavy smoker? This nicotine concentration will keep up with your needs

24mg (2.4%) No comment.

Shipping information

Where does Apollo deliver orders?

Apollo is well known for great product selection, and also for the quick dispatch of orders. Most orders are shipped the next business day, and we deliver to the USA, and Worldwide (Apollo will not be held responsible for any customs issues, if they occur). If you have any questions on shipping, please contact our Customer Service Team.

How much does shipping cost?

Free shipping is available to customers with a USA shipping address on orders over $50. Simply select the Free Shipping method during checkout.

When will my order be delivered?

Orders are usually shipped within 1-2 business days, and delivery depends on the shipping method you select at checkout.

What payment methods are avaiable?

Currently you can check out using PayPal. You do not need to have a PayPal account to checkout, you can simply pay with a debit/credit card as well. 

Your Account / Orders

Where can I check the status of my order?

The status of your order can be seen in your account. Please keep in mind you need to log in every time you place a new order and to check the status of your orders. You will also receive email notifications when your order is processing and complete – meaning it was shipped.

My order status is pending/processing. What does this mean?

When your order status is pending, this means we did not receive payment from you, and the order is incomplete and will not ship. If you still want to move forward with this order you need to reorder it and complete the payment process. The short way of doing this is to go to ‘My account’, find the order order and hit ‘reorder’.

If your order status is processing, this means our team is processing the order and it will be shipped soon.

Apollo Discounts & Deals

Are there any discount codes I can use?

We run promotions typically 1-2 times a month. The best way to stay up to date is to sign up for our mailing list! You can do that at the bottom of each page on the website!


What are the ingredients in Apollo’s e-liquids?

All the Apollo e-liquids are made in our state-of-the-art ISO 8 Certified cleanroom facility in Livermore, California.

Apollo’s e-liquid mixologists are not just avid vapers and flavour gurus, they are also experienced chemists with BSc or PhD degrees. Unlike other e-liquid producers, our facility adheres to good manufacturing practices commonly found in the food manufacturing industry. This means a strict protocol and procedure is practised throughout the entire manufacturing process, from recipe development to bottling, to ensure a consistent quality. Apollo e-liquids are guaranteed contaminate free.

We take great pride in the quality of our ingredients. All flavors are made with:
USP Grade PG and VG
Food Safe Ingredients
Laboratory Grade Nicotine

Why does my e-liquid change color over time?

E-liquid can change color, sometimes even before you open it, as a result of oxidation (common chemical reaction). E-liquids containing nicotine may change their color when they are exposed to air, light or heat, and sometimes even when they are kept in cool, dark places. 

If  your e-liquid turns darker inside a clearomiser/tank and you get a slightly burnt taste, it’s time to replace your coil with a new one, throw the burnt tasting e-liquid out, and wash your tank under warm water (let it dry completely before vaping again).

Clearomizers / Tanks / Coils

How do I know which tank is compatible with a certain battery?

The first thing you have to check on both desired vape components is the threading. Threading available on the market fits 2 main categories – 510 and eGo, but most of them come with adaptors so you can easily switch from one to another. Secondly you should always verify the resistance of your coils is compatible with the battery you are using, so that you don't overload your battery. If you have any questions or concerns about this, please speak with our Customer Service Team.

What coil should I choose?

Coil (atomizer head) resistance is measured in ohms and comes in over 1.0 ohm and under 1.0 ohm resistance for sub-ohm tanks. The lower the resistance of the coil, the bigger the generated wattage, meaning your coil will get hotter and generate considerably more vapor. If you are using a sub-ohm resistance coil, always make sure the battery you are using can handle the lower resistance.

What is a coil’s lifespan?

The lifespan of a coil head greatly depends on usage, the e-liquid, and the style of vaping. It can be anywhere from a couple days to a few weeks.

When should I replace my coil?

Coil heads need to be replaced when you start to get a burnt taste and your tank produces less vapor. 

What can I do if my tank is not working?

This usually happens right after you have changed the coil or refilled your clearomiser/tank. You have to check that your coil is in a good working condition (if not, replace it with a new one), that the coil head is tightly screwed in (finger tight is enough), and that your tank is correctly reassembled. If you are still having trouble, please contact our Customer Service Team.

What can I do when my tank leaks?

Leaking can be caused by many factors and can typically be resolved quickly. Please contact our Customer Support Team for assistance.


How long will a battery last between charges?

It is important to know how long your batterywill  last between charges. You should pay attention to the battery capacity which is listed in mAh (milliampere-hour). The higher the mAh rating is, the longer the battery will last. Roughly, we can say that 100 mAh equals 1 hour of usage.

The mAh is a good guideline to follow in regards to battery life, but it is hard to say exactly for how long a single charge can last (as it is greatly influenced by your style of inhaling, the surrounding temperature, the resistance you are using it with, etc.).

What does pass-through mean?

The pass-through feature means you can use your battery even while it’s charging.

What are the variable voltage (VV) and variable wattage (VW) setting about?

Basically, voltage is the amount of energy in a device and wattage is the amount of work that is done in a unit of time. When you are using a device with VV settings, you are telling it to send a certain amount of energy through the circuit. When it comes to VW settings, you are telling your device how much work to do, and the vaping device figures out the voltage needed to overcome the resistance (based on coil head).

Why should I choose an advanced battery/mod?

The most advanced batteries (usually known as mods) are more powerful and feature wattage and/or temperature control for an enhanced, fulfilling, and customizable vaping experience. There are a wide variety of coils tand tanks they are compatible with, and you can adjust their settings until your reach the kind of flavor, throat hit and the vapor production you are aiming for.

What are 18650 batteries?

The 18650 battery is a versatile rechargeable accumulator meant for internal use, being the vape industry's battery of choice for most of the box mods on the market. 18650 batteries have a great lifespan and a wide power output. Apollo sells only the best authentic brands available. Please note: 18650 batteries require an external charging unit.


PLEASE NOTE: As of November 22, 2015 our Warranty Policy has changed. All purchases made on or after this date are subject to the revised Warranty Policy outlined below. If you have any questions please contact our Support Team at Warranty Replacements can only be honored by our Support Team if the product was purchased from us via this website, and you can supply your order information. If you purchased your Apollo product from one of our authorized retailers you must redeem your Warranty through that retailer.

Apollo offers a Six (6) Month Limited Warranty on all Apollo branded electronic components (including batteries, chargers, and mods). This warranty does not apply to 3rd party products not made by or branded with the Apollo logo. For a period of Six (6) Months we guarantee that your Apollo product will be free from defects in material workmanship under normal use and service for the product’s lifecycle, according to product usage documentation. This warranty does not cover any defects or damages on products that have been lost, misused, improperly or inadequately maintained, or modified. The warranty lasts for a period of Six (6) Months from the date of purchase, however products are limited to a maximum of five (5) replacements on any given item. The item must be ruled defective by our Support Team and will be replaced with an equal item from current inventory. Replacement or upgrade of product is your exclusive remedy under this warranty.

Apollo offers a Thirty (30) Day Limited Warranty on all 3rd party electronic components (including batteries, chargers, and mods). This Warranty applies to products not manufactured or branded by Apollo. For a period of thirty (30) days we guarantee that 3rd party products purchased from Apollo will be free from defects in material workmanship under normal use and service for the product’s lifecycle, according to product usage documentation. This warranty does not cover any defects or damages on products that have been lost, misused, improperly or inadequately maintained, or modified. The warranty lasts for a period of thirty (30) days from the date of purchase, however products are limited to a maximum of two (2) replacements on any given item. The item must be ruled defective by our Support Team and will be replaced with an equal item from current inventory. Replacement or upgrade of product is your exclusive remedy under this warranty. 3rd party products typically include a manufacturer’s warranty, in which case you must directly contact the manufacturer of the product for warranty replacements.

Apollo offers a Fourteen (14) Day Limited Warranty on all clearomizers, tanks, cartridges, replacement coils and cartomizers. This warranty does not cover any defects or damages on products that have been lost, misused, improperly or inadequately maintained, or modified. Using e-liquid that is highly acidic or contains cinnamon will void this warranty. Clearomizers, coils, cartridges and cartomizers are intended to eventually burn out and be replaced, and there is no perfect measurement scale for how long they will last due to a variety of factors. Everyone uses these products differently, and we cannot control for all variables. Recent industry quality studies have shown that if an atomizer works properly the first time it’s used, there is little reason other than improper use for it to stop working properly. We cannot warranty these products for a period of more than fourteen (14) days, because many of them only have a lifespan of fourteen (14) days.

All sales of e-liquids, disposables, and Rebuildable Drip Atomizers (RDAs) are final. Apollo does not accept returns or exchanges of these products and does not offer a warranty for them.

All warranty exchanges require preauthorization and must be accompanied by a completed Return Merchandise Authorization Form (RMA). To obtain authorization and an RMA Form, please contact customer service via online chat, or email support (, or call customer service at 855-2-APOLLO (855-227-6556).

Apollo reserves the right to revise or modify the terms of this warranty agreement at any time for any reason without prior notification.

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