FE, "friction modifiers", and additives.

[chesspirate]

I've mentioned BITOG on here a couple times but nobody ever seems to go and read the stuff. Its a forum of a bunch of people who talk about oil. Just like this forum, but more specific.

Anyway, i've used VSOT and liked it in my truck and wifes car (won't be in new car though). Using FP60 and LC20 in my new car though, check out the gas log, i think most of my mileage increases are due to tire pressure and additives (since those are the only two things i've done)

There are guys on there that do UOA's (used oil analysis) on oil and figure out how the oils hold up in different cars for different service periods, all very technical stuff, and they give out info here and there on what oil brands are really like under the microscope.