rotohead
TDR MEMBER
Been using Opti-Lube XPD in my truck for a number of years and wondering if putting a little too much every time I top off my tank could cause the injectors to foul up? Being exact with what I add every time is difficult. At the time I'm always thinking it's better to add slightly too much than too little. Anybody have thoughts on this? I'm beginning to see more smoke/haze in my exhaust then I'm use to. I'm sure there are people that think it's not necessary but I feel it's worth the time/expense.