Oil zddp ?

roccodart440 said
When I think about a tiny container of ZDDP dumped into a valve cover hole and whatever tiny bit of it making it down to the 6, 7, or 8qt pan. Then starting the engine, letting it run long enough for the oil pump to circulate and mix the oil enough to evenly mix in that ZDDP additive and of course carry the rest of it down to the pan.....

Does it sound ridiculous to you yet?

Buy the oil you need. Pour it in, start it, run it.

Gasoline has additives that are added this way into the huge underground tanks. They don't carry around 87, 89, 91, and 93 in the trucks. Oils also have additives from the production that have to get mixed in, so why not an additive from the end user. Personally, I didn't do it, I used Valvoline VR1 in my '80 Aspen, but nothing wrong with adding it in yourself.