Re: O.T. 15W40

Posted by Redman on June 07, 2004 at 21:34:06 from (66.44.173.232):

In Reply to: O.T. 15W40 posted by rustyfarmall on June 07, 2004 at 19:21:47:

we had a 8.1 and ran 15-40 in it from the day it was new,turned it in at 105K with no troubles.
i read the rest of the posts,and it raised a couple of questions.
1.how can a crankshaft grind a bearing?a crankshaft is polished and if the friction would ever get high enough to grind the bearing that bad it would spin it,with no question.

2.how could putting heavier oil in a engine blow a head gasket when the oil is under low pressure there?a quad 4 is noted for head gasket trouble,i had 2 of them i learned after the second one too.
most new engines today use a break in oil to start with and once the engine has been run the oil never fully gets out of the bearings.
example-we had a 1066 that was getting tired so we parked it after last springs field work,we brought it into the shop in febuary without starting it tore it down and ordered parts for it.
it sat in the shop that way for 2 weeks and it still dripped oil from the crankshaft when we installed the new bearings.

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