Thread: Oils other than Mobil1?
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Old Jul 24, 2010 | 11:35 PM
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onehundred80
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Default Re: Oils other than Mobil1?
Originally Posted by Lark
Working many years as an auto mechanic and engine rebuilder, many internal engine failures were due to infrequent oil changes. Collapsed lifters, worn cam lobes and bearings, worn rings and pistons, shot rod bearings, worn rockers and shafts, pushrods filled with sludge, valve guides, all due to oil breakdown, not oil level. Oil is a complex molecular chain and breaks down in use. That would be considered an "oil failure".
I've brought in many heads to machine shops that they called "Quaker State" specials due to sludge build-up. BTW Quaker State changed their additive package a long time ago and is a fine brand.

Art Rigsby
I helped a friend repair a '56 Chevy Bel Air in 1964 and the engine was plugged solid with dried sludge, the rockers were completely dry as the oil-way in the rocker shaft was plugged solid. The push rod holes were plugged solid except where the rods moved, in fact the sludge had a polished look to it where the rods rubbed against the hardened sludge. Seemingly these cars came with the option of an oil filter and this car did not have one.
Maybe the previous owner was someone with Joliet John's philosophy.
 
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