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Author: Subject: Best 10W40 Semi-Synth
phelpsa

posted on 5/7/10 at 05:04 PM Reply With Quote
Best 10W40 Semi-Synth

Gonna fill the gixxer engine up with some good quality oil, but whats recommended? I've seen mention of Castrol Power 1:

http://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_263283_categoryId_165507_langId_-1?cm_vc=IOV4PDPZ1&a mp;iozone=PDPz1

Or possibly a millers oil? What do most people use?

Adam

EDIT: Wrong link :p

[Edited on 5-7-10 by phelpsa]






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Gordy

posted on 5/7/10 at 06:18 PM Reply With Quote
I use castrol 10w40 racing fully synth, i like to use the best oil i can find as the engine is under more strain/load when fitted in a car and no clutch slip problems that some guys have mentioned with using a fully synth oil.
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matty h

posted on 5/7/10 at 06:28 PM Reply With Quote
I use Vauxhall semi sythetic oil it is made by one of the big oil companies think it is comma.If you buy more than one gallon they do me a deal 4 for the price of 3 works out cheaper than the comma stuff.
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britishtrident

posted on 5/7/10 at 06:42 PM Reply With Quote
Be aware with car oils in bikes the more recent API specifications (from SH to SM ) have reduced percentages of anti-wear additives (zinc dialkyldithiophosphates) this was done to protect the catalyst and lambda sensor from deposits which reduce their effectiveness.


This is why most motorbike manufacturers continued to recommend the obsolete SF & SG specification.





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matt_gsxr

posted on 5/7/10 at 07:28 PM Reply With Quote
Andy Bates who has more experience of this than anyone recommends Maxum4 and supplies it at a good price.

I guess the manufacturers specification for your engine is a bit out of date (like mine). I suspect all quality modern oils will be the nicest oil that your engine has ever tasted given how technology has moved on.

I am sure that Castrol stuff from Halfords would do a fine job.

Matt

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cosmick

posted on 5/7/10 at 09:12 PM Reply With Quote
The main thing that everyone seems to ignore is whether the oil is suitable for a wet clutch or not.
Look for oils that are JASO MA approved the MA bit refers to a wet clutch test to ensure that it is not affecting clutch slip. Semi Synthetic is best NOT fully synthetic.

[Edited on 5/7/10 by cosmick]

[Edited on 5/7/10 by cosmick]





If it can't be fixed with a hammer then its probably an electrical problem.

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