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Best silicone oil UK: match the job before the price

Updated: 23 October 2026

You searched for the best silicone oil UK because a treadmill belt squeaks, a uPVC window sticks, an acrylic pour needs cells, or an air-gun seal is dry. The chemical name is shared. The job is not. A 100 ml treadmill oil, a 400 ml spray, a 45 ml pouring additive and a 30 ml gun oil can all say silicone and still sit on the wrong surface. The scored rows are on the [silicone oil comparison](/hub/fillers-adhesives-and-sprays/silicone-oil). Prices are the amazon.co.uk listing figures, not a promise of today’s shelf. A qualifying purchase can earn us a commission at no extra cost to you.

You searched for the best silicone oil UK because a treadmill belt squeaks, a uPVC window sticks, an acrylic pour needs cells, or an air-gun seal is dry. The chemical name is shared. The job is not.

Our top picks

3-IN-ONE 3-IN-ONE silicone spray, 400 ml

Best overall

3-IN-ONE 3-IN-ONE silicone spray, 400 ml
9.0/10about £9.78
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Viscos-350 Viscos-350 treadmill oil, 100 ml

Rank 2

Viscos-350 Viscos-350 treadmill oil, 100 ml
9.3/10about £4.99
View offer
Lubrisolve Lubrisolve silicone oil, 1 litre

Best value

Lubrisolve Lubrisolve silicone oil, 1 litre
8.3/10about £22.99
View offer
On this page
  1. 1.Four jobs, four buys
  2. 2.What to read on the label
  3. 3.Volume and pence per millilitre
  4. 4.What this shelf cannot tell you

Four jobs, four buys

Start with the surface in front of you. Treadmill oil here is a neat liquid with an applicator. NordicTrack’s UK lubrication guide tells you to buy a silicone lubricant for that deck and not a grease made for another job. The 3-IN-ONE spray is written for doors, windows, hinges and rubber, not as a measured film under a belt. Pouring oil is measured in drops. Pébéo prints a ceiling of 3 to 8 drops, and a treadmill mention on Nicpro or Dingsen does not make a belt kit. Abbey Silicone Gun Oil 35 is for air-gun seals, not a deck. Who each listing is for is on best silicone oil.

What to read on the label

“100% silicone” is a claim, not a viscosity. Viscos-350 states 350 cSt and names polydimethylsiloxane. That figure is the seller’s row, not a British Standard. The same listing carries an SAE row of 75W-140. Limino prints 0W-20 and DecorRom prints 0W. Those grades do not tell you how thick the film is. Volume fields fail in the same way. Abbey’s title says 30 ml, while the unit-count field says 1050.0 millilitres. DecorRom’s title says 200 ml and the liquid-volume field says 200 centilitres. FloraVigo’s title says 140 ml and another field says 100. If the number you are paying for is not the number in the title, check the bottle when it arrives. Aerosols have a further label duty under GB CLP, and Northern Ireland follows EU CLP. The 3-IN-ONE listing has no CLP phrase. “Non-toxic” on a treadmill bullet is not a food-contact claim.
3-IN-ONE 3-IN-ONE silicone spray, 400 ml

Testsieger

3-IN-ONE 3-IN-ONE silicone spray, 400 ml
9.0/10about £9.78
View offer

Volume and pence per millilitre

Sticker prices only make sense inside one job. Around £5 to £7: Viscos-350 at £4.99 for 100 ml, Prounol 100 ml at £6.49, FloraVigo at £6.99, and Pébéo at £6.80 for 45 ml. Around £7 to £11: Abbey at £7.21 for 30 ml, Limino and DecorRom at £8.99, the 3-IN-ONE spray at £9.78, Prounol 200 ml at £10.49, and Nicpro at £10.99. Lubrisolve is £22.99 for 1 litre, about £2.30 per 100 ml of neat oil, which is the best value when you will use a litre on small parts, trim and occasional gym kit. It is a poor comparison with a £4.99 bottle if you only oil a belt twice a year, because the litre does not list an applicator. Do not divide the 400 ml spray into the same sum. The can is solvent and propellant as well as silicone.

What this shelf cannot tell you

Stars are a count of reviewers, not a lab. Viscos-350 is 4.5 from 675 ratings. The 3-IN-ONE spray is 4.6 from 2,383. Pébéo is 4.4 from 2,170. FloraVigo is 4.9 from 8, which is too small to outrank a 4.5 from hundreds. Prounol’s 4.6 from 18,501 appears on both the 100 ml and the 200 ml files, with the same first 50 texts, so it is not a count for one size. Your manual still beats the shelf. A waxed or sealed treadmill deck may not want oil at all.

Common questions

Do I need 350 cSt?
Only if your manual or the oil you are replacing names that grade. Viscos-350 is the listing here that states 350 cSt. That figure is the seller’s row, not a British Standard. Other treadmill bottles in the set leave centistokes blank and sometimes print an SAE grade instead, which is not the same measurement.
Can I use pouring silicone oil on a belt?
The Nicpro and Dingsen bullets mention treadmill use, and Pébéo does not. Those bottles are sold as cell additives, with drop counts for paint, not as a long-tube belt kit. Use one on a deck only if the treadmill manual allows a silicone oil and you can place a thin film without soaking the walking surface.
What is silicone gun oil for?
Abbey Silicone Gun Oil 35 is a 30 ml bottle at £7.21 for airsoft guns, rifles and air-gun seals and O-rings. UK reviews use it as a silicone alternative to petroleum oil on CO2 seals. One review says it should be clearer that it is not for metal working parts. The unit-count field says 1050 ml, which the title and the 30 g weight contradict.
Why does the listing show 0W-20 or 75W-140?
Those are SAE-style rows on silicone-oil pages in this set: 75W-140 on Viscos-350, 0W-20 on Limino, 0W on DecorRom. They are not a centistoke viscosity and they are not a reason to choose the bottle for a car engine. Prefer a listing that states centistokes, or follow the manual’s own grade.
Does “non-toxic” mean food safe?
No. Several treadmill bullets say non-toxic or odourless. That is a marketing line in the listing, not a food-contact approval. The 3-IN-ONE brand site mentions NSF H2 on its silicone spray, and that line is not in the amazon.co.uk listing for this can. H2 is not a claim that you can use the product on food.

Related pages

Silicone oil for treadmills

Silicone oil or silicone spray

Silicone oil

Best silicone oil on Amazon: a role for each bottle

How to use silicone oil without flooding the surface

Sources

Public UK sources used for this comparison. amazon.co.uk prices, stars and review counts are the figures in the listing files scored on 21 October 2026, not a live check on the day you read this.

  1. HSE, GB CLP (retrieved 21 October 2026)
  2. GOV.UK, Aerosol Dispensers Regulations 2009 (retrieved 21 October 2026)
  3. GOV.UK, General Product Safety Regulations 2005 (retrieved 21 October 2026)
  4. Consumer Rights Act 2015, section 11 (retrieved 21 October 2026)
  5. NordicTrack UK, how to lubricate a treadmill (retrieved 21 October 2026)
  6. Halfords, 3-IN-ONE Professional silicone spray hazards (retrieved 21 October 2026)
  7. Pébéo Studio acrylics silicone oil, 45 ml (retrieved 21 October 2026)
  8. ECHA, polydimethylsiloxane (retrieved 21 October 2026)