zinc oil useage?

MidnightSwinger said

I don’t disagree, but what is more? What’s the PPM is your favorite gas oil vs my choice of diesel oil(test at ~1100 ppm)

Your answer on the base oil doesn’t support your claim that it is different from a gas engine. Those are the same base oils that a gas engine use. What make the difference is conventional vs synthetic or blend.

A 10w30 that’s rated for gas and diesel, with a similar PPM of ZDDP will have no ill effect on a gas engine.

I ain’t saying diesel oil is going to suck your knee caps through your pee hole, but given the right viscosity and ZDDP content, it’s going to get the job done.

Click to expand...

Keep telling yourself that diesel oil is good for you. Because it's not.

I'm not a tribologist but I have been dealing with oils since before I switched to alcohol fuel in 1988. We had issues running alcohol with certain oils. So I needed to figure out why.

You are far too fixated on ZDDP and how many PPM you need. Like I said, more is NOT better and the minimum PPM you want to know is based on base oil selection, intended use of the oil, fuel being used and any OTHER secondary lubrication regime the tribologist may use.

Zinc is a consumable. So is the phosphorus that makes the zinc work. Certain base oils may not do well with a certain PPM of zinc. So they adjust the additive package to account for that.

One oil may only need 1200 PPM and another 1500 PPM to do the same job.

Buying an oil based on ZDDP PPM is like buying a cylinder head or carb based solely on CFM ratings. Don't do it. But you will because people swear by diesel oil.

There are far more important factors than ZDDP percentage.