|
I use 4oz of Opti-Lube XPD pretty much every tank. I notice that the computer usually off (pessimistic) about 2 MPG.
My road trip today with JBD at 100% averaging around 80 MPH highway, indicated 32 MPG, Fuelly (hand-calc) is actually 34 MPG
__________________
2009 BMW 335d
2002 VW Golf TDI
|