Originally Posted By: MolaKule
Zinc - 1600 ppm
Phosphorus - 1450 ppm
Calcium - 2200 ppm
Sodium - 350 ppm
Silicon - 5 ppm
Vis @ 100°C (cSt) 12.35
Originally Posted By: MolaKule
Originally Posted By: Shannow
No problems with that level of zinc with spalling/pitting ?
One of the tests done was on a blueprinted 625 Hp V8 engine (very expensive test btw) for hours at varying RPM under varying loads. Crankshaft, cams and bearings were examined microscopically after teardown and no spalling or corrosion pitting were indicated.
That makes sense to me. Many of my friends and I ran Penrite HPR 30 in our cars and bikes for years, both leaded and unleaded fuel, but none had cats. The HPR 30 has 1570ppm Zinc, and I never heard of any problems, even after years of usage.
I notice you have a touch of sodium there, what is that for ? You have ample TBN for an oil that should be changed after a single day at the race track.
Just for arguments sake, if somebody did live in a very hot climate (me) so no winter start issues. Plus they had an older cat-less pushrod car (younger me), so no zinc issues. Then they went against the advice on the label and ran the oil for 6 months say (younger foolish me), would you expect any issues with the engine / oil ? Maybe it has limited dispersant levels to hold the soot in suspension ? But I'm just guessing.