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thanks guys...may go with the PP 40 weight oil or Mobil 1.

so patman...do you prefer the PP over mobil 1?

which do you prefer Patman PP 5w30 or 5-40?

yeah they are LT4 Vette, but I just notice more when I use GC 0w30. I know that ordering AMSoil is easy doing it online but its really expensive plus shipping. Trying to pay same as I do with GC

well the valvetrain noise has some or alot to do with LongTube headers and cam(918 comp cam springs to go along). I just seem to notice the noise more with the GC oil.

see not really wanting to buy RP oil.

Whats up guys?! Ive been using the GC 0w30 oil in my LS1 Camaro, but it tends to have a lil more valvetrain noise when i use it. I was wondering what other oils would be better to use to eliminate the extra noise. I would rather stay away from the Royal Purple or AMSoil simply b/c i dont want to...