Have any of you guys had experience with Shell rotella or Chevron's Delo 400 15W-40 oil? I've been researching oil lately b/c i haven't been "up-to-date". I found out the API added another service rating.. "SM". Reason I'm asking is b/c I'm going to use one of them (probly shell) b/c they're $8/gallon and meet the CI-4+ rating and SL. Trying to save some money... and I don't see any harm if rigs worth TONS of money run shell and delo. Getting tired of paying $5/qt for mobil 1. That and the mobil 1 "extended performance" only meets SL/CF. the regular mobil 1 meets SM/SL/CF. now.. if I can get some shell or delo for a lot cheaper and meet higher specs... why the heck not, right. I live in FL, so the cold pouring is not an issue. 40F on the coldest days only for hours. I've been searching around and A LOT!!, i mean a lot!! of Proffesional "real truck" mechanics.. ie Freightliner, mack etc all say Delo and Shell are GREAT oil and they recomend them for gas and diesel motors.
$5/qt oil meets CF... $2/qt oil meets CI-4+. What do you guys think? I've been a die hard "synthetics are better" type guy, but you really have to wonder what kind of crack you're doing when paying $5/qt and the guys driving rigs worth more than my house use shell. that and I found some literature on the web accusing Amsoil of being a "pyramid" scam. that came off a Mercedez Benz Forum from some prefered customers. they said they got oil, and offers for vitamins and coffee mugs <img src="/forums/images/graemlins/lol.gif" alt="" /> 1 guy swears it's Amway, a pyramid scam from back in the day.