Anyone run Xpd Fuel Improver, additive?
Anyone run Xpd Fuel Improver, additive?
1991 Chevrolet Silverado 3500, 6.2L. 125,000 miles -Sold
2007 Chevrolet Silverado LBZ - R.I.P
2001 Chevrolet Silverado LB7-- Sold
2011 GMC Sierra, LML- 39,000 miles. All stock