This is just a heads up, I was @ Oriley's auto parts yesterday and happen to glance thru there oil and found the (Valvoline Racing Synthetic 20w-50 on sale from $8.98 down to $5.45 a qt. WOW The 20w-50 has very high Zinc and Phosphorous levels great for high performance boosted or NA engines. Even safe for gas/alcohol.



Here is the PDF showing the VR-1 Z/P levels -->http://www.valvoline.com/pdf/vr1_synthetic.pdf

 

Good prices but be sure you have the correct clearences to be running 20w50 motor oil. Was just the 20w50 on sale or lesser weights as well ?

 

If I remember from his build his clearances are pretty loose. Good price.

 

Yes I built my engine loose for high RPM high boost.