Diesel Fuel Supplement Cetane Boost Year Round Formula 32 OUNCES Treats 100 Gallons 4.87 Any Good Edited by: hdpoul

I've used the PS and Stanadyne and FPPF (not all at the same time!) in my 03LB7 with consistent results (MPG, power, etc). It's cheaper than Standadyne but not GM-approved. It's also not as concentrated so you use more per tank, but still about 1/2 the $$ per tank as the Stanadyne costs. PS's website specs do indicate "No Alcohol" which is something GM warns you again (additives with alcohol).


In West MI it is a lot easier to find PS than the others......