OK8N said: (quoted from post at 16:03:13 12/18/11) Actually, 18 to 19 quarts is fine. And the fluid is also used by the hydraulic system. I use 80-90 wt. mineral oil in mine.
Folks are really hung up on this "mineral oil" thing.
Question: What modern automotive lubricating oils are not "mineral oil"?
Answer: Only the very expensive PAO based synthetics. ALL conventional lubricating oils refined from crude oil pumped out of the ground are "mineral oil".
So any conventionally refined UTF is in fact "SAE 80 mineral oil". And since the API allows highly refined Group III mineral oils to be labeled as synthetic even some "synthetic" UTF's made from Group III base oils are actually "mineral oil". I suspect the reason Ford specifically said "mineral" oil in 1939 was to warn farmers against dumping things like whale oil, corn oil, or liquid lard in the sump. Nahhh - they were all smarter than that right?
TOH
PS> And IMO absolutely nothing wrong with a true syntehtic either other than the high cost.
This post was edited by TheOldHokie at 14:07:22 12/18/11.
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