Re: To rebuild or not rebuild, that's the question!
On Mobil 1 --
My work truck has had Mobil 1 since new. Recently found a broken head bolt, and pulled both heads to replace all head bolts and inspect. Was very surprised to see on this 90K- mile engine that there was no ridge in any of the cylinders and the original hone marks were still visible on the cylinder walls. Can't argue with no wear. BCD.
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