Cheap Source of ZDDP (Zinc) ?

JMKZHI wrote:

I don't recall why, but racing oils may not be suitable for motorcycle or regular car use.

I have read that their additive packages are designed for short duration, high temp use but not for longevity in normal riding.

That's it.

As a side note, MOBIL 1 RACING 4T 10W-40 is marketed as a motorcycle oil & was formerly labled as Mobil 1 MX4T 10W-40 for motorcycles.

www.mobiloil.com/USA-English/MotorOil/Oi...acing_4T_10W-40.aspx