Like this site? Help us to make it better.

Green Oil Agent Apple Degreaser



Not cheap compared to some, but impressive cleaning power should you neglect your drivetrain
Works well on neglected drivetrains
Made in Britain
Makes your fingers tingle

At every product is thoroughly tested for as long as it takes to get a proper insight into how well it works. Our reviewers are experienced cyclists that we trust to be objective. While we strive to ensure that opinions expressed are backed up by facts, reviews are by their nature an informed opinion, not a definitive verdict. We don't intentionally try to break anything (except locks) but we do try to look for weak points in any design. The overall score is not just an average of the other scores: it reflects both a product's function and value – with value determined by how a product compares with items of similar spec, quality, and price.

What the scores mean

Good scores are more common than bad, because fortunately good products are more common than bad.

  • Exceptional
  • Excellent
  • Very Good
  • Good
  • Quite good
  • Average
  • Not so good
  • Poor
  • Bad
  • Appalling

Green Oil Agent Apple Degreaser will take on some tough challenges without relying on any petrochemicals, using fermented fruit extracts instead. GO claims it is perhaps the most powerful bike degreaser available, and considering the state of my chain and cassette at the beginning, I'm inclined to agree.

Right, this stuff is strong, so that 'con' about it making your fingers tingle isn't an issue if you use gloves. I didn't have any, and to be honest I'm not that bothered about immersing my skin in fruit extracts. If you have sensitive skin, though, take precautions.

> Buy this online here

Performance-wise, though, I'm impressed with the Agent Apple. This is a new recipe created since we last reviewed it back in 2015.

The chain and cassette you can see in the pics were new for the winter in 2020, and had done about 4,000 miles before the bike got bunged in the shed with the intention of having all of the salt and grime cleaned off it.

With the amount of test bikes coming through, though, my Kinesis, which the chain and cassette were fitted to, was left to fester. Normally I'd replace the parts in September, ready for the rainy season, but with the current prices and lack of availability, I had to make do with what I had.

I had cleaned both, but after a soak in the Agent Apple they have come up pretty spanking.

2021 Green Oil Agent Apple Degreaser Cassette After.JPG

Between the before and after pictures, the cassette was literally soaked for about five minutes and came up near spotless with just a wipe off with a cloth.

2021 Green Oil Agent Apple Degreaser Chain Before.JPG

The chain took a longer soak, the two hours recommended by Green Oil, and I'd say that has come up pretty well. This bike only ever sees wet weather, so the drivetrain gets a lot of abuse.

2021 Green Oil Agent Apple Degreaser Chain After.JPG

All the crap that has accumulated around the chain pins was removed, giving it a much smoother operation and ready to be re-lubed.

Ingredients-wise, Green Oil has used plant-based alcohol from EU grown sugar, fermented apple extracts and orange peel.

If your chain has Covid-19, it'll kill that as well!

Green Oil says that you can use this degreaser three times over, and I'd say that is true if you are using it on some seriously dirty components. After I'd used it for an initial deep clean, I used it on the chain every week by daubing it on a cloth and giving it a wipe to keep it clean, which makes it usable many times over.

That helps when you're looking at the price: at £14.99 for 300ml it's pricey compared with some: the 1 litre of Morgan Blue Professional Chain Cleaner for £11.95, for example. There are no eco-credentials there, though.

Adam was impressed with the Juice Lubes Dirt Juice Boss Chain Cleaner. He reckoned it worked really quickly, although we're talking £14.99 for half a litre.


At £14.99 for 300ml the Agent Apple isn't cheap, but performance-wise I reckon it is pretty impressive.


Not cheap compared to some, but impressive cleaning power should you neglect your drivetrain test report

Make and model: Green Oil Agent Apple Degreaser

Size tested: 300 ml

Tell us what the product is for and who it's aimed at. What do the manufacturers say about it? How does that compare to your own feelings about it?

Green Oil says, "Agent Apple was created because people asked us for an alcohol based super powerful degreaser - to get any metal part shiny like new.

Re-created for 2018 to be re-usable, Agent Apple Extreme Immersion Degreaser is perhaps the most powerful bike degreaser available.

And it's biodegradable."

A powerful degreaser – and it's reusable.

Tell us some more about the technical aspects of the product?

From Green Oil:

- From Covid-19 to chain grime - Agent Apple destroys it.

- So strong it can be re-used 3 times - pour back into the bottle!

- Make your cassette or chain look new again

- This really works!

- Utilizes fermented apple extract, natural alcohol, and orange extracts. Very powerful.

- So strong, you can pour it back into the bottle over 3 times.

Rate the product for quality of construction:
Rate the product for performance:
Rate the product for durability:
Rate the product for value:

Tell us how the product performed overall when used for its designed purpose

I was impressed with how well it cleaned up an abused drivetrain.

Tell us what you particularly liked about the product

Cleans very well.

Tell us what you particularly disliked about the product

Make sure you wear gloves.

How does the price compare to that of similar products in the market, including ones recently tested on

Eco-friendly, biodegradable products aren't cheap against the opposition, as you can see by those mentioned in the review.

Did you enjoy using the product? Yes

Would you consider buying the product? Yes

Would you recommend the product to a friend? Yes

Use this box to explain your overall score

It's good: it isn't cheap but it works well, and has done a good job on my drivetrain which was in a bad place.

Overall rating: 7/10

About the tester

Age: 42  Height: 180cm  Weight: 76kg

I usually ride: This month's test bike  My best bike is: B'Twin Ultra CF draped in the latest bling test components

I've been riding for: Over 20 years  I ride: Every day  I would class myself as: Expert

I regularly do the following types of riding: time trialling, commuting, club rides, sportives, fixed/singlespeed,

As part of the tech team here at F-At Digital, senior product reviewer Stu spends the majority of his time writing in-depth reviews for, and ebiketips using the knowledge gained from testing over 1,500 pieces of kit (plus 100's of bikes) since starting out as a freelancer back in 2009. After first throwing his leg over a race bike back in 2000, Stu's ridden more than 170,000 miles on road, time-trial, track, and gravel bikes, and while he's put his racing days behind him, he still likes to smash the pedals rather than take things easy. With a background in design and engineering, he has an obsession with how things are developed and manufactured, has a borderline fetish for handbuilt metal frames and finds a rim braked road bike very aesthetically pleasing!

Latest Comments