I figure if I'm gonna get the best outta my expensive Webered/cammed/valved/balanced Black 202 I should be using good oil.
I've chosen the best I can find: 'PM' brand 25/60.
True, it cost $190 for 20 litres, but instead of 5000-6000km changes, I can easily go 25 000. (cabs on gas running this oil regularly go 35 000+, so I feel pretty safe with my figure.)
All I do is change filters at the usual intervals.
I chose the viscosity because it's a slightly better spec for the LPG gas I have FINALLY had fitted last week! (posting pics this weekend.)
Another reason I chose PM was, apart from higher quality oil stocks, they are Australian owned, not Euro or Seppo bastards.
HKing of The-Good-Oil.
'i'm definately shore that guage wont work with my tuff bango diff and Opal sydcrome box,if it goes though my grill,and I put the breaks on I realize its better with the glimer belt & tunned holly and Ederbrock duel feul webber gaurds, wiht etc primmer.'
I run 50W Penzoil
Both. I find it to be a great oil for either. However I wouldn't suggest using it if your not anal about warming your car up.
I'm using Penrite 40w70 at the moment but it's a pretty dumb choice. Since I started using it the mpg dropped from low 18's to high 16's :-(
I thought I'd try it out seeing the engine has a slight knock when hot at idle. Didn't help. Will go back to 20w50
[http://www.penetrato...|Best cruise song ever]
Pennzoil GT 50.
Only oil that I have found that makes a true 10psi per 1000rpm when hot.
but as stated above, must warm up before hand. near grease when cold.
valvoline 10/40 synthetic enhanced in all my hq racing engines. on the street in most cars, 20/50 valvoline (5l with a filter for $18) and never a drama with it.
im not a big believer in heavy oils unless the engine is worn or has been purposely built with big clearances, which is less common these days with advances in both parts and oils.
i feel that at our low power level in hq racing, oil pressure values are over rated, my particular car that ive been driving will run 25 to 35 psi at racing speeds up to 5000 rpm and never had a problem. when the engines are pulled down the bearings look very good. my crank is still at std size, and this engine has done a lot of racing miles!
Thanks for that guys, 20/50 is the most popular. I've tried 20/50, 15/40, 15/50 and 25/60. My engine seems to like 15/50 the best.
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