Gee whizz guys! Do you think amisol has a secret? They get their oil from the same wells everyone else gets theirs from!! For gods sake..it is just OIL.. Theirs don't come from the MOON..now does it?
We have 150K on my wifes Suburban. Changing oil at the JiffyLube every 6 or 7K.. Thats right, the change oil light comes on on her dash about every 6500 miles and when I get the chance I take it to the jiffylube..
I have them put whatever is on sale in the thing.. (do you think they are slipping AMISOL in the thing as a joke?).
With 7 years on the vehicle and 150K I have installed new wires and plugs and a new thermostat. It didn't need them but I did it anyway. And the usual A/C repairs on suburbans.
THAT IS ALL I have done to the vehicle.. It still has the original brakes, tranny filter and fluid.. Fan belt, gear lube and coolant. (when changing the thermostat I drained and replaced the coolant.) She is on her third set of tires and she likes the thing so much she won't allow me to purchase her a new one..
There are no real secrets in the oil business. I'd almost bet that Amisol has their oil mixed at the distributon centers that all the other oil companys use!
I have wondered for years how much Mobil 1 pays Chevrolet to have the oil cap with their name on it.. There has gotta be money changing hands in that deal.
I have never seen a disinterested party test these new oils. All I have seen are the companys themselves saying how good they are. I'd like to see a prominate racer run his car thru the traps with different oils one after another.. I'll bet there are no differences in preformance.

Two old time sayings come to mind..
1. A fool and his money are soon parted.
2. There is a sucker born every minute.
Big Jim <img src="/forums/images/graemlins/pfft.gif" alt="" />