deerefan
Veteran Member
I just performed the first pan off svc on my 97 f150 with about 180k miles. All other services were flushes. The fluid had about 50k miles on it. There was not much debris in the pan but the filter was black. I will svc the trans this way from now on. It saved me about $100. I used castrol high mileage mercon 5qts. I will say I noticed better performance after the svc. The condition of the filter had me concerned. It's like the flush pulled debris from the pan and lodged it in the filter. This was an easy task for someone with basic mechanic skills. The filter and fluid cost about $45. I am not saying the flush did not work. Heck, I have 180k on the original trans. Is the ford 4R70W known to be a solid trans?