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Life span of engine oil?
#11
My car sat for roughly 30 years before I found this:

[Image: attachment.php?aid=35345]

About a quart of water came out of the oil pan when I drained it before the sludgey mess followed. Because of all the moisture building up in the cylinders (which #4 & #8 had about a half cup in each and were rusted solid in-place) the rust was so bad in #4, that my "never-been-bored-and-would've-only-taken-.020"-to-make-it-good-again" block had to be bored out to .060" to get rid of the scar from the piston being rusted there for so long.

Even though I'm in West Texas (where you would think humidity and moisture wouldn't be a big problem), whenever I fire up the car now, there is always plenty of condensation building up on the exhaust tips and dripping out while it's running... and everybody talks about how 'dry' it is here.

If for nothing more than the purpose of taking accumulated moisture with it, I think an annual oil change prior to or even after seasonal driving is a pretty safe hedge against rust build-up from moisture accumulation while it sits.

As for what kind of oil? Beats me - motor oil is kind of one of those things you can discuss to death and everybody will still disagree on the 'best' practice, oil type, oil brand, etc... I think pretty much everybody ( whistling ) agrees that it needs to be changed periodically. Cool

Eric

[Image: mach1sig2.gif]
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#12
Mister 4x4;255155 Wrote:My car sat for roughly 30 years before I found this:

[Image: attachment.php?aid=35345]

About a quart of water came out of the oil pan when I drained it before the sludgey mess followed. Because of all the moisture building up in the cylinders (which #4 & #8 had about a half cup in each and were rusted solid in-place) the rust was so bad in #4, that my "never-been-bored-and-would've-only-taken-.020"-to-make-it-good-again" block had to be bored out to .060" to get rid of the scar from the piston being rusted there for so long.

Even though I'm in West Texas (where you would think humidity and moisture wouldn't be a big problem), whenever I fire up the car now, there is always plenty of condensation building up on the exhaust tips and dripping out while it's running... and everybody talks about how 'dry' it is here.

If for nothing more than the purpose of taking accumulated moisture with it, I think an annual oil change prior to or even after seasonal driving is a pretty safe hedge against rust build-up from moisture accumulation while it sits.

As for what kind of oil? Beats me - motor oil is kind of one of those things you can discuss to death and everybody will still disagree on the 'best' practice, oil type, oil brand, etc... I think pretty much everybody ( whistling ) agrees that it needs to be changed periodically. Cool

How did you ever get the pistons out acid?


When a man is in the woods and talks and no women are there is he still wrong??
Tongue
David
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#13
2 cans of PB Blaster, soaking for a few days in Marvel's Mystery Oil, and finally the BFH for the 2 seized slugs. #8 dropped out after only a few whacks with the BFH, but #4... took about an hour of beatin', bangin' & cursin' before it finally broke free.

The rust rings (from where the pistons were resting/rusting) required boring to .040" to get rid of #8, and .060" to get rid of all but a few minute specs of damage in the #4 hole.

Eric

[Image: mach1sig2.gif]
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