wanted to share some info.. in my 04 3500 HO 6 speed... just changed over to AMSOIL synthetic at 31,000 miles on truck.... i 'am so pleased with the hard earned money i spent on this stuff... i gained almost 2 MPG'S and acceleration better... and on cold mornings wow SMOOTH under start-up...

 

Lots of threads and polls on that subject, pretty much beat to death. You can do a seach and read for hours.

I prefer an organic philsner with a lime.

 

should i have posted my story in another area mr geico????