mopar430
Junior Member
For all hemi engines ive found the Best Line racing oil additive lesson the hemi tick, ive tried it out on my 6.4l, and 3 other buddies 5.7,plus ive seen gains of up to 3mpg, on my 6.4l and a buddies 5.7 gained 2mpg. Just something to consider im not a dealer for them and or getting anything out of promoting there products, just some helpful information that ive found and proven out.

