make sure you have a 180 degree thermostat. and that the motor runs at least 45 min every other month (this will steam the humidity and condensation out of the oil through the crank case vent system), also make sure the crankcase vent system works freely (some truck just had a down spout, or vent with a wire-wool mesh filter)
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.