F-Type V8 Oil Viscosity when modified

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Oct 15, 2025 | 08:33 PM

#21

randyb

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Joined: Aug 2011

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From: FL

Quote:

Originally Posted by CarlB

I'm pointing out the distinction because many seem to be under the impression there are risks to increasing the viscosity back to 5w-30 or higher.

There can be risks, with to high a weight, there can be issues also. I believe Lizzardo said it best, get your oil checked by a lab first and then go from there.
Also, if OP is changing at or less than 3k miles, he should be good at the recommended weight, but I would check with a lab to be on the safe side.