ok sorry i am just getting back to you... i have been a little busy with school... the truck is a 94 xlt with the 5.8l i had the oil changed about 1500 miles ago the plugs were changed 20,000 miles ago. as far as maintainance i do almost everything myself... if i get the time. i had my engine rebuilt about 20,000 miles ago and since then i have changed the fluids on time and have not had any problems. the truck has 199,600 miles on it as a whole. last thurs after i made this post i had to jump my truck twice and i realized that i had a bad connection so today i cleaned both cables and the batt. and it ran a little better, but then i realized i was a little low on coolant so i added some and ran it for a min. and everything seemed ok with just a hint of stutter... then i took the rad. cap off and the coolant was foamed up and white... is that normal? i am guessing no... i know some of this is stupid but i just want to make sure so i dont screw something up. thanks guys