AMC-HD is a unique blend of lurication technology that can take the pressure and the heat. Contains Zinc phosphates for good camshaft and distributor/cam gear break in. Also contains esther for sealing leaky seals and a high TBN (total base number). Oil change intervals double and it will increase oil pressure over 10w30 OR 10w40!
Sold in cases of 12 1-quart bottles
MSDS available