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What is the best motorcycle OILS ???

  • Thread starter Thread starter Fancool
  • Start date Start date
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Fancool

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What is preferred oil for older bikes ie. 1978 Suzuki GS1000. Was told that synthetic oils even Amsoil are bad for clutches and I should stick to regular oil? I like good synthetic oil but don't want to damage bike or clutch. Or should I just use whatever I like?
 
I use Shell Rotella 5W-40 synthetic diesel oil in my bikes.
 
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Like Ed says, Rotella. You can get it at Taiwan Tire fairly reasonably priced. { not as cheap as he can get it but it's the best bang for your buck }
 
Wealth of info in a oil thread so I gotta ask.....What the F is Taiwan Tire ?
 
Great info, I live in Canada and have a Canadian tire very close to me.
I would never have thought to use that oil as it is in the diesel section of oils.
It is cheaper then Mobile 1 or Amsoil.
Thanks.
 
Not all synthetic oils will harm the clutch. Avoid car oils with friction modifiers. Can't go wrong with rotella.Mobil1 makes a motorcycle specific oil altho very expensive, golden Spetro is a more moderately priced motorcycle specific oil available in both synthetic and mineral.
 
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I have been using synthetic oils since Mobil one first came out in the late seventies. Amsoil, Redline, Rotella, used them all in many many motorcycles. Never had it cause a slipping clutch or any other problems.
 
Synthetic oils is not more "slippery", it's just more shear stable so it lasts a long time, and it's more temperature stable so if you overheat the engine while stuck in traffic the oil won't thin out as much as mineral oil. Good stuff.
 
I like the idea of synthetic oil and how they dont break down as fast, but they come in thin viscosity like 5w or 0w and knowing how viscosity keeps moving parts away from each other makes me want to run at least a 10w oil, so I run 15w40 rotella dino oil.
 
Not so sure it is the "viscosity" that keeps the moving parts away from each other, but whatever makes you happy.

The first number in the viscosity rating is the 'cold' number, and is an indication of how easily the oil flows when you first start the engine. My philosophy there is that thinner oil will flow through the small bearing clearances easier, which prevents the moving parts from touching each other. Higher-numbered viscosities might build better numbers on a meter, but that does not mean that oil is flowing through the bearings, only that there is a lot of pressure trying to get it through them.

Yeah, I use 5w-40 Rotella. :encouragement:
 
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