Cadillac Repair: your opinion, 1994 cadillac sls, would like your opinion

Question
1994 Cadillac SLS 4.6 Northstar. Hi, I would like your opinion on the ZMax oil,fuel, and transmission product. Also, what do you think about the replacement strut and shock kits that change the suspension to a passive system? Thanks.

Answer
All these products of which I refer to as LIQUID MECHANIC in my opinion are a waste of money.

I do not suggest that you alter what parts and components that the manufacturer puts on the vehicle when it is made as these after market systems tend to screw up the vehicles electronics.