HDP Additives

GM LUBE-GARD Automatic Transmission Protectant
Our Low Price: Only $24.99

Brand: HDP Performance
Product No: #HDP1044

GM automatic trans friction modifier. This is the stuff GM installed in your 4L80E from the factory—its wonderful.

Stanadyne Diesel Fuel Additive - Winter 1000
Our Low Price: Only $9.00

Brand: HDP Performance
Product No: #HDP1626

Cost affective cold weather protection.
One pint (470ml) treats 125 gal. (470 L).
Perfect for extreme cold climates.