I have a 1991 300E 4matic, my question is this...my car does not smoke around town or at around 45 mph, but If I get on the interstate and travel about 60mph, it looks like a fogging for bugs. I do know the car did alot of sitting where it wasn't driven alot in the past 4 years, and prior to that since it was new it did alot of highway travel. (Surgeon owned). I picked up some smoke away stuff that says it rebuilds the seals and so on, will that work? I haven't tried it yet because I have to put it in when I change the oil. Or, because it sat pretty much idle for a period of time should I get back on the interstate and just let it work its way through its smoking period? Please help!!!!

Thanks E. Billman