Quote:

so the solution is oil thats $10.75 a qrt?



Not exactly. It doesn’t have to be that costly.

That same oil is $8.30 per quart with the Amsoil Preferred Customer membership. Or a less costly alternative could be Synthetic SAE 10W-30/SAE 30 Heavy-Duty Motor Oil (ACD) . The ACD works out to $5.97 per quart Preferred Customer cost.

ACD 10W-30:

Zinc content 1339ppm
Phosphorus content 1180ppm

Around the 1200ppm mark for Zinc and Phos., is considered to be adequate for flat-tappets.

Also, consider the cost of a quality alternative motor oil plus the cost of an aftermarket additive. The two added together is getting up there in price. In the end what’s the difference in price, $10-$12? And if you go that rout, you’re not guaranteed 100% compatibility of the motor oil additive package to the aftermarket additive. For example are you going to end up with oil foaming tendencies by using a motor oil and aftermarket additive? That's happened.

One oil product, one cost, no worries… Some like to go that rout, but not all.

CompSyn