Hello all !!
My 94 xlt manual transmission 140K miles, consumes coolant since i bought it 4 months ago.
Now is summer here, and the other day i needed to refill the radiator and expansion tank with half gallon ( 1,7 lts) after 280 miles mixed driving.
The fuel tank cap seems in good shape ( not too old), and cames with the truck. I don't know the bar specs of it ..
I don't see coolant speeled in the floor, or in the engine compartment, and i've never noticed a vapor pressure coming from the engine.....
The engine is running fine, and the truck is in very good condition now.
When i changed the plugs, the old ones seemed fine, at least at my eyes.
What can be the cause?, and how can i test to try to figure it out?
The temp gauge is fonctioning ok, and the needle stays always just befor the "N" letter.
Any advice is welcome
Thanks!!!