To keep fuel systems clean, TOP TIER detergent gasoline is recommended. See Fuel (Gasoline).
If TOP TIER detergent gasoline is not available, one bottle of GM Fuel System Treatment Cleaner added to the fuel tank at every engine oil change, can help. GM Fuel System Treatment Cleaner is the only gasoline additive recommended by General Motors. It is available at your dealer.
California Fuel Requirements
(Gasoline)
Fuel for Diesel EnginesA/Trans Case Assembly Case Cover Side Automatic Transmission Unit
A/Trans Case Assembly Case Cover Side(2)Line (to valve body)(7)Cooler Feed(8)Lube(10)Compensator Feed(22)R1(28)35 Reverse Clutch(37)1234 Clutch(43)26 Clutch(47)456 Clutch(53)Void ...