It has 180,000 miles. My front tube seals are far worst than the back ones to, go figure. I was kinda wondering the same thing because my 93 sho had the same tube seal leaking but I never did anything about it at all, and never had this issue. It only leaked in the tubes and about a quart and a half per oil change and I never had any ignition problems... I figured o well maby this one it did cause a problem.. im going to change the wires first on the off chance that its that because I really dont want to drop the fuel tank.