The premium fuel is probably because the lower octane causes knock and leads to hotter manifold temps. Also, I'll bet they see a lot of warranty work from people who ignore the octane recommendation. Always good to give them the reminder.

I would guess that the L67 is more at risk because of the hotter temps. It has to get pretty hot for oil to actually catch fire on the manifolds. The L36 probaby doesn't reach those temps as easily.

I would never have guessed that the spark plug holder and burning oil would be the culprit with these engine fires. I would have thought for sure it was electrical, but considering that very few modded cars go up, it makes sense since those cars would have removed that strip, and would probably not have oil leaking from the front gasket for very long.

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2000 Regal GS | Stattama Twin-Charge T72 | 12.69 @ 109.09 | 15psi | 2.01 60' |