My Mazda 929 has 245,177 miles and the Lincoln Ls has 75,000 miles. I use the oil stabilizer, fuel treatment and transmission additive. I swear by your products because they keep my vehicles running in top condition. I've turned quite a few people on to your product and they now are loyal happy users for life as well. Your products simply do exactly what they say they're going to do. I only regret I can't get the transmission additive in my Lincoln Ls. The transmission is sealed with no dip stick. I've only been able to flush the tranny at the dealer because no else has a flush machine for that type of tranny. The dealer would not add the bottle of Lucas to the flush machine as I expected and was unhappy to hear. Aside from that both my vehicles are Lucas’d out. I and everyone who appreciates a product that actually works thanks you and keep them coming.