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Best biodegradable chainsaw oil

Updated: 22 October 2026

You want one bottle for a garden saw this weekend, and a different bottle if a woodland officer or a buyer will ask which test the oil met. The best biodegradable chainsaw oil in this set splits on that line. Star count and a named test point at different litres. Products Compared read the saved amazon.co.uk listings on 21 October 2026, with no lubrication lab and no merged review samples. The full table is the [bio chainsaw oil comparison](/hub/forestry-tools/chainsaw-oil-bio). A qualifying purchase can earn a commission at no extra cost to you.

You want one bottle for a garden saw this weekend, and a different bottle if a woodland officer or a buyer will ask which test the oil met. The best biodegradable chainsaw oil in this set splits on that line.

Our top picks

Oregon Oregon O10-6362 1 litre

Best overall

Oregon Oregon O10-6362 1 litre
9.8/10about £11.13
View offer
Liqui Moly Liqui Moly 1280 1 litre

Best value

Liqui Moly Liqui Moly 1280 1 litre
9.7/10about £12.49
View offer
Stihl Stihl BioPlus 1 litre

Rank 3

Stihl Stihl BioPlus 1 litre
9.7/10about £17.89
View offer
On this page
  1. 1.One bottle for a garden saw
  2. 2.When the label has to name a test
  3. 3.What to skip
  4. 4.The Oregon two-pack is the same oil

One bottle for a garden saw

For a normal UK garden saw, start with the Oregon 1 litre, part O10-6362, at £11.13, which is £11.13 per litre. The listing is 4.8 from 13,667 amazon.co.uk reviews, and the bullets say the oil is 97% biodegradable, non-toxic, and an anti-fling formula for summer and winter. UK reviewers describe it on cordless and electric saws. One buyer used about a quarter of a bottle on a large tree. That is the top pick when a widely reviewed litre and the 97% line are enough. The Amazon page does not print OECD 301 B, and there is no pour spout, so a mini saw wastes oil. The price checks sit in the bio chainsaw oil buying guide.

When the label has to name a test

When someone will ask for OECD 301 B, start with Liqui Moly part 1280 at £12.49 for 1 litre. The amazon.co.uk bullets say the oil is plant-based and name that test, and the manufacturer’s UK page says the same. The star line is 4.7 from 2,369 reviews. Among 1 litre bottles that name the test on Amazon, this is the best value, at about £1.36 more per litre than the Oregon litre. Stihl BioPlus on the saved Amazon listing is £17.89 and says quickly biodegradable without naming the test. Stihl’s UK page does name OECD 301 B, the Blue Angel, and the EU Ecolabel, at £12.13 per litre including VAT. A pond, a UKWAS wood, or a public contract is set out on bio chainsaw oil for woodland.
Oregon Oregon O10-6362 1 litre

Testsieger

Oregon Oregon O10-6362 1 litre
9.8/10about £11.13
View offer

What to skip

Skip the 100 ml DD-Teck bottle if you came for a litre. It is £6.29 on the shelf and about £62.90 per litre. The title says bio mineral oil and names no test. It can suit a mini saw used a couple of times a year, but several UK reviewers thought they had ordered a litre. Skip Makita Biotop as a default. It is £22.95 for 1 litre, part 1910U0-9, at 4.7 from 31 ratings, with no UK review sentences in the file and no named test. Reviews saved from France and Germany are not UK opinion.

The Oregon two-pack is the same oil

Skip the Oregon pack of two if you thought it was a better-reviewed oil. It is the same O10-6362 at £22.26, still £11.13 per litre, and the saved review text is the same 13,667-rating sample. One bullet says the pack includes 1 litre, which fights the title. Buy it when you already want two litres in the shed. Do not add the star counts together.

Common questions

Which bottle is the sensible garden buy?
The Oregon 1 litre at £11.13 is the sensible garden buy when you want a large UK review sample and the listing’s 97% biodegradable line is enough. It is 4.8 from 13,667 reviews and states anti-fling for petrol and electric saws. Leave it if a contract or a certificate will ask for OECD 301 B, because this Amazon page does not name that test.
Which bottle should I choose if a contract asks for a test?
Choose a bottle that names the test on the page you will be asked to show. Liqui Moly at £12.49 names OECD 301 B on amazon.co.uk. Stihl’s UK site also names OECD 301 B, the Blue Angel, and the EU Ecolabel, while the saved Amazon listing for BioPlus does not. Public buyers under Defra’s 2015 standard are also pointed at OECD 201, 202, and 203. A 97% line does not meet that paperwork.
Is DD-Teck the cheap option?
The £6.29 price is for 100 ml, about £62.90 per litre, and the title does not name a biodegradability test. It can be enough oil for an occasional mini saw. It is not the cheap option once you compare it with a £11 to £13 litre.
Why is Makita dearer with only 31 ratings?
Makita Biotop is £22.95 for 1 litre with 4.7 from 31 ratings and no UK review text in the file. The UK bullet does not name a test. You are paying for the brand bottle, not for a deeper sample or a named method. French and German review sentences do not fill that gap.
Should I skip Stihl because Amazon is dearer than the dealer?
Skip the Amazon price if £17.89 is more than you meant to pay and the dealer page at £12.13 including VAT is the offer you can actually use. Do not skip the oil itself for that reason. The UK Stihl page is where OECD 301 B and the ecolabels are written. The Amazon listing is the quickly biodegradable claim without the test name.

Related pages

Bio chainsaw oil vs mineral

How to use chainsaw bar oil

Bio chainsaw oil

Biodegradable chainsaw oil buying guide, UK checks

Biodegradable chainsaw oil near a pond or UKWAS wood

Sources

Public UK sources and manufacturer pages, plus amazon.co.uk listing details from saved listings dated 21 October 2026. This is not a laboratory test.

  1. UKWAS, Woodland operations (retrieved 21 October 2026)
  2. Defra, Government Buying Standards for hydraulics (2015) (retrieved 21 October 2026)
  3. HSE INDG317, Chainsaws at work (retrieved 21 October 2026)
  4. Oil Storage (England) Regulations 2001, regulation 2 (retrieved 21 October 2026)
  5. Oil Care, biodegradable lubricants (retrieved 21 October 2026)
  6. Stihl UK BioPlus (retrieved 21 October 2026)
  7. LIQUI MOLY Bio Saw Chain Oil (retrieved 21 October 2026)
  8. Oregon O10-6362 biodegradable chain oil (retrieved 21 October 2026)