Originally Posted By: HighMileCummins
Originally Posted By: jake88
I always advise against mixing two oils together - you have no way to predict the way detergent and additives will interact in your oil system. The viscosity will fall somewhere between the two parts, but certain detergents have a way of pulling other additives out of solution if the additive systems are not designed to be mixed.
The zinc is just an effective counter-ion to stabilize the cross-linked phosphorous anti-wear film - and antimony, ammonium, molybdenum can also be effective at this (though MoDTP tends to decompose into MoS2). Also worth noting is that calcium and magnesium detergents have been shown to destabilize the anti-wear film - so I would not recommend an HD engine oil if you decide to tighten up those springs. A typical HD engine oil has higher phosphorous, but over twice the detergents you actually need.
If you want a high-zddp/low detergent oil built for that application, there are plenty of great oils on the market: Champion (full disclosure, I'm their chief chemist), Amsoil, Valvoline, Purple, Red Line, etc.
Jake88 I see that you're from Missouri. Is Champion a Mo company? I haven't really heard of it, unless I just don't remember? Lol
Yep, it is in a little town called Clinton - situated between KC and Springfield, near Truman Lake. It used to be "Lowe Oil Company"