BG Products offers products for engine flushing, transmission flushing, coolant systems flushes and fuel injection flushes with the use of their various products www.bgprod.com
. They even say if you have less than 36K miles on your vehicle and have a transmission flush performed by their dealer they will warrant the transmission for the next 7 years/150K miles.
My truck is approaching 90K miles, isn't buring oil, doesn't overheat and gets 14+ mpg. Does anyone have an opinion on doing these flushes and/or using these types of products to clean your systems out as part of regular maintenance for high-mileage trucks?