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Had you considered Amsoil's Z-Rod oils? Supposedly ideal for flat tappet, non-roller valvetrain.

8 qts capacity. I agree about the aluminum possibly not going away as long as I continue to use the Manley spring locators. But OEM part would add another .015'ish to installed spring height (dropping spring pressure) and with the Manley's the valvetrain runs perfect to 6700 rev limiter and...

I agree if only the aluminum wasn't so high, I would definitely stick with PU. I've got two autocrosses coming up, and at least one trip to the drag strip, with some commuting mixed in, should hit somewhere around 4000 miles and will remove the PP and replace with z-rod. I'm certainly not a GM...

Wow, that even has a nice 4-ball wear spec. I was considering the Premium Protection 10w40 since it certainly appeared better than the SS 10w30 and Euro 5w30, but the Z-Rod certainly looks better in all respects short of TBN. So its looking like Z-Rod is next. Originally Posted By: tpitcher...

Because of the aluminum/copper/iron or ? Originally Posted By: Merkava_4 I'm thinking the engine needs a 40 weight of some kind.

...as far as driving conditions, I'm a responsible adult, and actually do baby the engine and driveline, as best I can for the conditions. In fact, friends say the car is far more capable in the 1/8th and the 1/4 than I'll drive it (MPH higher than ET would indicate), but d*mn'ed if I'm going to...

Keeraap, yes, very astute there 04SE, it's *Ultra* not Platinum. I've just put in Platinum...since I can NOT find any more ULTRA! Hear that Penzoil?! Listening?!?! SHeesh, all that Ultra advertising on TV and I've found it only once...now how do I edit a thread title...help, moderator, anyone, I...

Decided to try Penzoil Platinum 10w30 in my LS3 powered 2010 Camaro SS. Engine has aftermarket cam, valvetrain, cold air intake, long tube headers, no cats, 3inch x-piped Magnaflow exhaust, host of suspension pieces, dyno tuned, makes a bit more power than the factory 426hp rating, now somewhere...

Originally Posted By: cpurser Originally Posted By: ducatisl It's truly amazing how much iron and copper these LS motors put in the oil. For my LS3, I just ran another OCI with Castrol Edge and after doing some valvetrain work am going to try Penzoil Ultra since I found it at Walmart for...

I just performed some valvetrain work and when I reassembled the valvetrain, I applied some Federal Mogul and Comp Cams assembly lubricant to things like valve seals, rocker arms, pushrods. Will a UOA on the resulting "contaminated" oil be way off on things like zinc, moly, and viscosity...

It's truly amazing how much iron and copper these LS motors put in the oil. For my LS3, I just ran another OCI with Castrol Edge and after doing some valvetrain work am going to try Penzoil Ultra since I found it at Walmart for $21/jug (after the $3 coupon). Nice to see another LS3 in the forum.

Torrid, forgive my ignorance, but what are you implying regarding the 210F viscosity? That the 5w30 and 10w30 oils are close?

Sure, it has roller lifters, and the rockers have trunion bearings, but the tips are not, so I switched to Yella Terra full (trunion and tips) roller rockers. I switched to an 0.025 longer pushrod to bring lifter preload up a little, to about 0.060 average as I recall. At around a steady 2000...

Hi, long time reader, first time poster. Here's my contribution to the database for those searching for LS3 powered Camaros/Corvettes: This is probably the 3rd or 4th oil change on my year old LS3 powered Camaro. Engine has aftermarket cam, valvetrain, cold air intake, long tube headers, no...