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The oil sucked out of the filter housing was glittery. The engine head was replaced by the previous owner 2 years ago. Unsure of oil age. Maybe break in on the head? Replaced oil with Valvoline premium blue 15w-40. The engine does not smoke. Decent compression.

I'm going to replace the gear oil in the transmission/transfer case on my dad's '63 CJ5. No one knows when it was changed since it was originally my grandfather's. To give you an idea, the differential oil was black. It doesn't see much use and only drives around the farm. I noticed driving it...

I'm going to replace the gear oil in the transmission/transfer case on my dad's '63 CJ5. No one knows when it was changed since it was originally my grandfather's. To give you an idea, the differential oil was black. It doesn't see much use and only drives around the farm. I noticed driving it...

1300 miles on the bike. 300 miles on the oil. Oil was very dark. Liqui Moly 4T 20w50 with Lucas ZDDP additive. Engine had some sludge in it, frequent oil changes for cleaning.

I’m planning on buying a few gallons of 100LL to use as a additive in my antique motorcycle. I only need to add a fuel ounces per gallon. In terms of extending life of the fuel, I was going to add Stabil. Since gasoline degradation is a result of oxygen, would storing it under an argon...

Hello, I have a '74 BMW R60/6 that's rather low mileage but sat for 20 years. After receiving it, I changed the oil and ran it some. I then sent the oil in for analysis at the next change and dropped the oil pan after I found sludge in a valve cover. I found more sludge in the other valve cover...