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chriscolleman
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I'm not a certified oil guy, but here's a guestimate.
2- stroke probably is a monograde low viscosity oil.
Something like SAE 5 or SAE 0.
When starting a Swedish candle I use it in stead of lamp oil or diesel.
It burns slower.
Also use it for the obvious reasons, 2-stroke engines
2- stroke probably is a monograde low viscosity oil.
Something like SAE 5 or SAE 0.
When starting a Swedish candle I use it in stead of lamp oil or diesel.
It burns slower.
Also use it for the obvious reasons, 2-stroke engines
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The trunk of this thread has many branches now.
1. I have always used multigrade oil mixed with petrol for my 2 stroke flymow [40 years old and still like new].Also in all my various strimmers, leaf blowers and hedge cutter. Never had an engine problem. When my uncle died he left me multigrade oil cans and I still have some left so have been using it for 40 years in 2 strokes.
2. I also use the multigrade in my 10 year old ride on 4 stroke lawnmover with no ill effects but not recommended.
3. Do they still make 2 stroke engines for road use ?
4. Pity about all these filters. I was going to put a wire brush in the tank to clean the injectors.
Frank
1. I have always used multigrade oil mixed with petrol for my 2 stroke flymow [40 years old and still like new].Also in all my various strimmers, leaf blowers and hedge cutter. Never had an engine problem. When my uncle died he left me multigrade oil cans and I still have some left so have been using it for 40 years in 2 strokes.
2. I also use the multigrade in my 10 year old ride on 4 stroke lawnmover with no ill effects but not recommended.
3. Do they still make 2 stroke engines for road use ?
4. Pity about all these filters. I was going to put a wire brush in the tank to clean the injectors.
Frank
Towpack
Well-Known Member
As many may know 2 stroke engines do not have positive lubrication of the piston, crank and big/little end bearings. They have to survive on an oil 'mist' delivered by the fuel/oil mixture induction through the crankcase. This means good 2 stroke oil, if anything, needs inherently superior lubrication qualities to the 4 stroke stuff, plus it also has to mix easily and fully with the fuel and leave minimal ash deposits behind when burnt. A different set of requirements to 4 stroke. 2 stroke oil in a 4 stroke will obviuosly offer very good lubrication initially but it is not formulated for long sump life and would degrade quickly IMO. The viscosity of 2 stroke is also formulated for cold delivery so what is the viscisity going to be when hot? As for using 4 stroke oil in a 2 stroke, again it will work to a degree but a lawnmower or hedgtrimmer is one thing and would you really want to risk it in a relatively high performance (and expensive) motorcycle engine??
2 stroke engines are still being made for numerous applications but are being phased out for road use, due mainly to ever tightening emmision laws. 2 stroke outboards are now illegal in many countries. Interestingly, at the cutting edge of performance 2 stroke technology in the world 500cc GP's (now MotoGP 4 strokes) the big 4 Japanese manufacturers reckoned the 2 stroke was nearing the end of it's development with the 500's kicking out over 400 bhp/litre so that coupled with the drive for cleaner emmisions was the nail in their coffin.
2 stroke engines are still being made for numerous applications but are being phased out for road use, due mainly to ever tightening emmision laws. 2 stroke outboards are now illegal in many countries. Interestingly, at the cutting edge of performance 2 stroke technology in the world 500cc GP's (now MotoGP 4 strokes) the big 4 Japanese manufacturers reckoned the 2 stroke was nearing the end of it's development with the 500's kicking out over 400 bhp/litre so that coupled with the drive for cleaner emmisions was the nail in their coffin.
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No I would not risk anything with any expensive engine.
Frank
Frank
chriscolleman
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Next time your 2-stroke chainsaw or hedgetrimmer kicks the bucket. Then open it up.
Most of the bearings are open so the mist can get in there and do its work.
4-strokes with pressure lubrication use other bearings and actually run on an oil film between the 2 surfaces needing lube.
2-stroke engines are real powerhouses compared to a 4-stroke. But environmentally the classic 2-stroke has its limitations. Double fuel and air ports, valves have given it a new future so we are still selling 2-strokes.
Lawnmower 4-strokes are a mix of mist and sump lubrication, some even have pressure lubrication. You really can't compare them to our diesel burning vehicle engines.
I'm not dumping a bottle of 2-stroke oil in my tank just yet.
Really would like to hear Toyota say it needs it
Most of the bearings are open so the mist can get in there and do its work.
4-strokes with pressure lubrication use other bearings and actually run on an oil film between the 2 surfaces needing lube.
2-stroke engines are real powerhouses compared to a 4-stroke. But environmentally the classic 2-stroke has its limitations. Double fuel and air ports, valves have given it a new future so we are still selling 2-strokes.
Lawnmower 4-strokes are a mix of mist and sump lubrication, some even have pressure lubrication. You really can't compare them to our diesel burning vehicle engines.
I'm not dumping a bottle of 2-stroke oil in my tank just yet.
Really would like to hear Toyota say it needs it
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