Anyone tried Opti-Lube XPD
I just treated my 2011 with 66000 miles on it to a fill up with 11 ozs of XPD. What a change, engine is quieter almost immediately. Don't know about mileage yet I had an average of 20.6 for the last 10k miles. A lot of +75 mph driving.
M DREI und M FUNF at ElkHart Lake
14 Audi S4 - Sons daily driver
13 C63 AMG. Coupe Devlpmnt Pkg 12 Sept. ED Delivery
12 K1600 GT One Lap of America-Sold
11 X5d (X Funf) ? PDC Delivery
12 HD FXDC Comfortable Cruiser
05 E500 4Matic ED Delivery
01 M3 (M DREI) Sunny Sunday Service
01 Honda RC51 Sons Bike
99 Ducati ST 2 My Bike
80 Porsche 911 Weissach Edition
72 350 SL Kitzbuhel Rally & Touring Car
60 Triumph TR 3 - X 2
Last edited by M FUNF; 11-05-2012 at 04:04 PM.