Need opinion Castrol oil and wt Im using...??

[kawi_zx10]

Noob here, so hi to all. Just got a nice all black 06 zx10r last week and now Im selling my 06 zx6r...

So I picked up a gal of Castrol full synthetic Power RS R4/4T ...was told its whats recomended and what the new kawis are coming with stock. Anyone using this oil. I got 5w-40, I live in Tucson where it gets pretty hot and was told this is a good weight to go with for the heat and cold start ups.

Looking for some feedback on this as I want to run the best I can for my new baby. I just picked the 10r a week ago and want to get some new oil in there. The bike has 2200k on it and I forgot to ask the original owner if he was running synthetic or not but with those low of miles I would think its ok to switch even it he wasnt. He said oil was changed at 700k miles and at 1500k...it looks ok through the site glass but I want fresh stuff in there.

So is the oil and weight I got above a good choice for the bike. Thanks a ton for any help.

[KawieKrazy]

I don't think that is the recommended oil according to the manual, but I would check with a local dealer who can address the heat of Arizona issue

[Tenquo]

Originally Posted by kawi_zx10

The bike has 2200k on it and I forgot to ask the original owner if he was running synthetic or not but with those low of miles I would think its ok to switch even it he wasnt. He said oil was changed at 700k miles and at 1500k...it looks ok through the site glass but I want fresh stuff in there.

Man oh man if you bought a bike with 2.2 million miles then i hope its for collection purposes.....i hope you mean 22k and that the oil was changed at 7k and 15k respectively, in which case hes a bit behind with what someone should do for a zx-10r...i would change it straight away...

As for the oil itself the castrol oil you got is good stuff....it is from castrol's motorcycle line right? now that theyve changed all the names im a bit lost...

But anyway 5w40 is what i use in Switzerland....5w is great for cold start-ups when its friggin cold outside....but unless its regularly below 50 degrees during the day 5w is a bit overkill and 10w is fine....as far as heat is concerned 40 is recommended for most climates, for arizona heat and a zx-10r the oil you should really be looking for is a 10w50...in fact the same oil you bought comes in a 10w50 version too; Castrol Power RS 4T 10w50