| 1995 powerstroke I have a 1995 quad cab f-350 powerstroke that seems to run great.My problem is when driving between 35-50 mph with the overdrive button in the on postion the truck surges or studders is this because its to slow and to few rpm for overdrive.Also the truck has 162000 ml on it with all the oil and lube job reciepts when would a person know the right time to change out the glow plugs? |