George:
Mobil told everyone that it was because of the lead in the fuel, and then they paid off all the damage claims so that it would stay hush hush. Having seen the damage first hand, I can tell you it wasn't because of the lead.
Lead doesn't cause major cylinder damage. The Mobil AV1 oil caused severe scoring and accellerated wear of the cylinder bores. It just could not lubricate the cylinder walls, why, I have no idea.
Just goes to show, if you have enough money, you can keep anything quiet.
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