My 2002 Nissan Pathfinder 171,000mi shook violently and the engine lite blinked on/off. Afer parking it seemed ok, but I took it to Nissan for a check. Then after they replaced the spark plugs the engine locked up. They found that cylinder #6 was nearly full of oil. They suggested that engine replacement would be better that trying to repair as the cost/labor to repair the cylinder may cost a little less but there is a possibility that more damage may have happened to the engine.
What is a typical repair cost to get oil out of a cylinder after engine has lock on 2002 Nissan Pathfinder
by TTop in Dalton, GA on March 15, 2012
ANSWER by patrick mannion on March 15, 2012
It is more likely the engine filled with coolant from a blown head gasket unless it filled with oil due to a huge internal mechanical failure in which replacing the engine would be more viable. Check the value of your truck first before making a huge investment.