Regular price
Sale price
Regular price
Sold out
Unit price
Tax included.

  • Cleans
  • Performance
  • Lubricates
  • Preventative maintenance
  • Reduces Friction & Wear
  • Quiets Noisy Lifters & Valves
  • Removes & Prevents Sludge
  • Keeps Engine Clean

Rislone Engine Treatment has been protecting engines since 1921.

Rislone® Engine Treatment Concentrate is high quality penetrating lubrication oil, combined with protective engine additives and special cleaning agents.

Its multi-grade formula allows the oil to flow freely and provides protection over a broader temperature range.

Sludge and other harmful deposits within engines can alter tolerances, stick rings, cause noisy valves & lifters, and plug oil passages and screens. The unique Rislone formula is designed to penetrate into valve seats, bearing surfaces, piston rings and ring grooves, where sludge and varnish is likely to form. These deposits are gradually removed and held in suspension until they are trapped in the filter or removed with the next oil change.

Regular use of Rislone Engine Treatment, with oil and filter changes at the proper intervals, will keep such deposits to a minimum. A cleaner engine is a better lubricated engine with less friction & wear.

  • Removes sludge and other harmful deposits
  • Improves oil circulation for longer engine life
  • Quiets noisy lifters & valves, frees sticking rings
  • Maintains normal oil viscosity at engine operating Temperatures
  • Reduces friction & wear, especially at engine start-up


Dosage & Directions

Add entire bottle of Rislone Engine Treatment Concentrate to engine crankcase.

Rislone Engine Treatment Concentrate may be used anytime, at or between oil changes. Do NOT overfill. Will not void manufacturer’s new vehicle warranty.

For best protection, use Rislone Engine Treatment at every oil change.


NOTE: For severely dirty engines, use 2 bottles (double dosage) of Rislone Engine Treatment Concentrate and change the oil after 150 kilometres of driving. Alternatively, use one bottle of Rislone Engine Treatment, at any time or when performing an oil service to prevent sludge build up. Consider using Rislone Engine Oil Motor Flush to remove sludge and deposit build up, prior to an oil service.

In passenger car and light truck engines, use one bottle for a 3.5 to 6 litres system. For larger systems, stationary engines and diesel trucks, use 1 bottle for every 5 litres of oil capacity.

Rislone® Engine Treatment Concentrate is compatible with all petroleum-based motor oils including conventional, high kilometres and synthetic formulas.

Use in ALL 4, 6 and 8 cylinder vehicles, with petrol, LPG, Diesel, turbo or racing engines. Works in motorbikes/vehicles with a wet clutch system, however dosage is 93mL per 1L of oil.

Rislone Engine Treatment is compatible with Rislone Ring Seal, Rislone Compression Repair, Rislone Valve Seal Oil Consumption Repair, Rislone Oil Treatment, Rislone Engine Repair, Rislone Engine Oil Stop Leak Concentrate and Rislone Rear Main Seal.

Note: If you are unsure what other additives could be in the oil system prior to adding Rislone, it is recommended to flush the system first.


Data Sheets

TDS Sheet

MSDS Sheet




Do I have to flush my oil after using Rislone Engine Treatment?

No, Rislone Engine Treatment is formulated to be left safely in the crankcase for the life of the oil change for maximum performance. It is not an engine flush and does not require draining.

Will Rislone Engine Treatment work in synthetic oil?

Yes, Rislone works with all petroleum-based motor oils including conventional, high mileage and synthetic. Rislone is also safe for use with PTFE-based engine treatments and will not alter the PTFE coating.

How does Rislone Engine Treatment work?

Rislone Engine Treatment gradually dissolves and removes harmful deposits of varnish, sludge and gum from the internal metal parts without plugging oil passages. These deposits from within engines can alter tolerances, stick valves and rings, cause noisy valves and lifters, and plug oil screens and passages. Regular use of Rislone Engine Treatment, with oil and filter changes at the proper intervals, will keep such deposits to a minimum.

How much Rislone Engine Treatment do I install?

One bottle of Rislone Engine Treatment Concentrate 500mL is designed to treat 4 to 6 litres of oil. You can also use it to “top off” your system between oil changes.

Is Rislone Engine Treatment safe for my newer vehicle?

Yes, Rislone Engine Treatment has the lubricating and protective capabilities of current motor oils, plus additional penetrating properties which do a superior job of maintaining long-term cleanliness and deposit control. Use of Rislone Engine Treatment will not void your new car warranty.

How long does it take to start working?

Rislone Engine Treatment starts working the minute you install and start driving the vehicle to help remove harmful gum, sludge, and deposits from your engine.

I accidently added the Rislone Engine Treatment into my petrol tank, what should I do?

Rislone Engine Treatment is only designed to be added to the engine crankcase. If the product is installed in the petrol tank, the tank should be removed and cleaned out by a professional mechanic.



Author: Joan

Review: I have a 2001 F150 with 220,000 km on it. For the last year or so, there was noise coming from the engine. I decided to try a Rislone Engine Treatment after I read so many great reviews. So about 2 weeks ago, I put it in with an oil change. At first, I thought it did nothing. I had to wait about 100 km or a bit more. Et Voila! It works. The noise is now gone and the engine just purrs along.