Re: Oil with Zinc

Posted by Packard Don On 2017/3/2 18:52:15

Not really an answer to the question but back in the '70s or early '80s, I used an oil with graphite in it that was "trending" at the time but proved unpopular if for no other reason than it was black so one couldn't tell when it needed to be changed but apparently for some it broke down into a sludge - a problem that I never had.

After adding it to my 1954 Patrician's rebuilt 359, the mileage improved and I had to slow down the idle. As it worked into the engine, the idle got faster and faster until I didn't even have to press the pedal to go 30 MPH! That oil, along with a set multi-point spark plugs from JC Whitney, are still in the car today but will have to be removed before it's started again for the first time in decades. I just came across a couple unopened cans of the oil in my shop.