Quote:
Originally Posted by Nick911sc
Wait what? Are you saying the change in oil is going to cause a loss in power on the top end of the motor? lol
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No -- I'm saying that #1 - you'll see a slight gain (potentially) from running full synthetic (especially after the pistons and rings have fully worn in)
and
#2, if the VQ37 feels a bit rough as you approach redline it's due to design characteritics of the engine and there's not much you can do about it without using a different cam profile, different head maybe, or at minimum, retuned VVEL.
The OP noted it runs smoother around 5K but is still rough after 6.5, and he wondered if any oil could change that -- doubt it.