I just recently spoke to a 25 year auto mechanic. Just about everything that he mentioned about lubrication was from 26 years ago. He has no clue about what is going on today. He swears by snake oils and 10W40 and how he gets 150,000 miles on his V-8 teerrucks. "Big deal" I said. I get over 300,000+ miles on my 4 cyl engines with 5W30 dino. He swears by products like Lucas Oil Stabalizer, Valvoline All Climate, Slick 50, Fram Oil Filters, IsoPropal Alchohol in every tank of gas,(I thing that he's drinking the stuff), and he claims huge increases in horse power with just a K&N Air Filter. I personaly have nothing against any of these products myself. I've even used some of them in the past(FRAM,K&N), but I couldn't get a word in edgewise with this guy. You had to here him rattle on! So when I was able to speak, I engouraged him to use diesel fuel and kerosene in his gasoline engines. He says "ya know, you just maybe onto something there"!