My dad went out and bought (2) 5 quart jugs of supertech oil. He wants me to change the oil on two cars for him (old S10 and Cougar), my dilema is should I just go out and buy some chevron (1.08) quart and put that in (not tell dad) or should I just use the supertech? I can use the supertech in one of my old beaters. He did buy the supertech oil filters (didn't want to put out the extra dollar for the fram, thank goodness).
Thanks