From what I have read here the LS1 engine seems to "like" a thicker oil than 5w-30.
Would it be a good idea to put in Mobil 1 0w-40 instead of "any" 5w-30 oil?
I have also read that a 0w-40(not just Mobil 1) will shear down in viscosity a bit(10-20%?), but
is it so bad?
I mean, even if it shars down a little bit it's still going to be thicker than a 5w-30?
And the HT/HS should still be better than almost any 5w-30?
I'm not trying to stretch out my OCI, I just want better protection for the engine.
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Planning to change oil after 3000-5000 miles (5000-8000km). That's the distance
I normally drive (with the C5) during the summerperiod (may-october).
BTW it is summer until the ground is covered with snow and/or the temperature falls below 0C (32F).
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I can get Redline oils but I don't "see" so many enthusiastic people about it here or am I wrong?
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If redline would be a better choice (than Mobil 1) what viscosity do you think would be appropriate? a 10w-40?
Some bloke at a swedish forum who has a C5 uses Redline 10w-40 for normal road-driving, but he changes the oil to Redline 15w-50 when he goes on the track.
What is the Redline ACEA or SAE ratings?
I guess neither Redline or M1 0w-40 are GM4718M rated, but it's not that important or....?
At least M1 0w-40 is ACEA A3 rated and it's not a bad thing.....
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