i went to my local jaguar dealer in houston to buy a deal only item. on the counter they had that infomercial engine treatment called "ZMAX" i didnt ask about it but found it odd that it was there and would use it as an additive. maybe its just me. but have has anyone used this or seen it at there jag dealers?

 

I put this stuff in the same category as glue on pin stripes. Just because the dealer sells it don't mean it's worth while.