Those VW Diesel engines were famous for problems with the pressure relieve valve sticking. A friend of mine had so many filters blow off the engine that he carried filters and oil in the car at all times.
Bob
I use Delo 400 15W40 in my wife's Jeep GC. It comes in four gallon jugs and the Jeep takes six to fill with filter change. In the summer I put all 15W40 but in the winter use four quarts 15W40 with two quarts Chevron Supreme 10W30. This is our 4th Jeep with the 4 Liter motor and it now has...
Back in the 30's depression my dad ran a 1929 plymouth on cleaning fluid. Probably benzene. He fed it to the motor through a copper tube wrapped around the exhaust manifold to heat it
In summer time I mix 4 qts. Rotella 15-40 and 2 quarts of whatever 10-30 I have around. Usualy Chevron supreme. In the winter just 10-30. This in my wifes Jeep GC purchased new which now has 132000 miles on it.
Bob
This is not right on topic but is interesting.
I was into desert racing and riding for many years. I always removed the chains (these were not O'ring chains) and washed them in left-over premix gas. Then I would soak them in a warm mixture of 50w oil and grease and hang them to drain. This was...
Back in the ancient 1950's the high priced oil such as Shell & Havoline was of an amber color. What we called cheap oil or 2-bit oil (bulk) was a beutifull green color.
Moving into the late sixties I remember asking the Husqvarna race team from Sweden what oil they used (two stroke motors) and...
I work for a company that manufactures rocket engines (including the space shuttle main engines). Years ago we used a lot of WD40. We had a rash of problems with bad welds on welded assemblys which were eventualy traced to WD40 haveing impregnating the metal and causing cracking and porosity. It...