differance between bike oil and car oil

Originally Posted by yorkie_chris

P.s you won't find many bike oils meeting API SF/SG
The motul 5100 I use far exceeds that standard as it's a 100% ester synthetic, but it's not TECHNICALLY correct for the bike as it's JASO MA certified NOT API SF.

See what I mean about it being a grey area?

You should read this page:

http://www.smartsynthetics.com/artic...ical_facts.htm

An excerpt taken from it:

"It is important to note that as an oil classification is superseded by a newer one, that the newer one provides improved benefits over the older one in such areas as high and low temperature deposits, wear, rust and corrosion for example and is perfectly suitable for use. All quality motorcycle specific oils should also carry the JASO Motorcycle Specifications, which are either the JASO-MA specification (no friction modifiers) or the JASO-MB specification (with friction modifiers). The JASO-MA rating specifies that no friction modifiers are used. Note that the JASO-MB motorcycle does have friction modifiers, but is designed for motorcycles thatspecify theJASO-MB specification.If the oil does not carry one of these specifications, even if the other specifications listed above are present, We recommend finding an oil that has the proper JASO specification clearly labeled on the bottle."

[embee]

As for the gearbox issue, bike oils have typically 50% more phosphorus content than "modern" car oils (measure of the ZDDP additive used to protect against wear in extreme pressure contacts like transmission gear teeth and traditionally for valve train cam/tappet wear).

The phosphorus degrades exhaust catalysts, and car manufacturers have to demonstrate compliance with emission performance (regulated pollutants) at very high mileages so catalyst deterioration is a big issue. Oil companies have been reducing ZDDP in car oils progressively over the years.

Originally Posted by neillfergie

heard the poly unsaturated fats made the clutch slip?

theyll oxidise in no time

[chris8886]

Originally Posted by Lozzo

You should read this page:

http://www.smartsynthetics.com/artic...ical_facts.htm

An excerpt taken from it:

"It is important to note that as an oil classification is superseded by a newer one, that the newer one provides improved benefits over the older one in such areas as high and low temperature deposits, wear, rust and corrosion for example and is perfectly suitable for use. All quality motorcycle specific oils should also carry the JASO Motorcycle Specifications, which are either the JASO-MA specification (no friction modifiers) or the JASO-MB specification (with friction modifiers). The JASO-MA rating specifies that no friction modifiers are used. Note that the JASO-MB motorcycle does have friction modifiers, but is designed for motorcycles thatspecify theJASO-MB specification.If the oil does not carry one of these specifications, even if the other specifications listed above are present, We recommend finding an oil that has the proper JASO specification clearly labeled on the bottle."

is it possible that someone could put that into more simple terminology for those like myself who barely understood a word of it, but would like to? please ta muchly

[Biker Biggles]

Originally Posted by chris8886

is it possible that someone could put that into more simple terminology for those like myself who barely understood a word of it, but would like to? please ta muchly

Use bike specific oil in bike engines

Originally Posted by Biker Biggles

Use bike specific oil in bike engines

Ignore the SF/SG spec recommended and look for JASO MA on the container. JASO is the Japanese body who set the standards for oils, and as you'll be putting it in a Japanese bike, go with what the little slanty-eyed man in the white lab coat recommends

[chris8886]

Originally Posted by Biker Biggles

Use bike specific oil in bike engines

not helpful, lol

Originally Posted by Lozzo

Ignore the SF/SG spec recommended and look for JASO MA on the container. JASO is the Japanese body who set the standards for oils, and as you'll be putting it in a Japanese bike, go with what the little slanty-eyed man in the white lab coat recommends

much more helpful, thanks for explaining it to this numpty