Bret.....I've been using Purolator Premium Plus exclusivly. The price is right when on sale,($2.50 or less), the availability (Sears, PepBoys,Adv.Auto)is plentiful, and I think that I have had one PPP over the past couple of years that gave me some clatter upon start up. The PuroPremPlus seem to be held in high reguard here at BITOG.