quote:

Originally posted by inferno camaro:
My engine builder is trying sell me on JR1 JRM4.1 synthetic blend oil. Hard time finding much about the JR1. I've not heard a lot about it and just curious how it compares.
I have found what seems to be a good deal on Schaeffer's moly micron oil, but if the JR1 is as good it is slightly less money and it's working with my builder.
He used to sell Penn Grade to has switched in the last couple years.