Ike’s first oil change, they grow up so fast
Well, maybe not the first oil change, but certainly the first oil change in a long while. After owning Ike for only a few months, it was time to give him a good old fashioned oil change.
Some observations: the drain plug is HUGE compared to what I am used to. The bolt head is over an inch across, and needless to say I didn’t have any proper tools to get the bolt off. I ended up having to use a pair of channel locks to get around the large bolt head. Also, with the amount of crud in the oil, I’m surprised it ran at all to be honest. If I had known how bad the oil was, I probably would have changed it sooner.
The change began innocently enough, drove the Jeep around to get it nice and warm, backed it into the empty garage, and started looking for a way to jack it up. That was the first hurdle. With the tight quarters on a CJ-3A, Willys-Overland put the drive train off center and on the passenger side. This means that the front and rear differentials, instead of being at the center of the Jeep, are off to one side. The side-drop is more pronounced on the front axel so I lifted it from as close to the center as possible and quickly got it on jack stands. The rear differential is closer to center and lifted it evenly enough that everything was good.
After wrestling with the drain plug, all 4 quarts of oil came rushing out pretty quick. I guess a near one inch hole doesn’t allow for much resistance. While the oil continued to slowly drip out of the pan, I turned my attention to the oil filter. Most modern vehicles, with some exceptions like my 4 cylinder Chevy Cobalt, the oil filter screws onto the bottom of the engine. This presents an interesting removal as oil comes streaming down your hand when you take it off. Ike, on the other hand, has a partial flow oil filter that sits above the engine block with a very large cartridge filter.
When I removed the filter, I noticed that the oil wasn’t draining out of the oil filter holder like it should. Using a nasal aspirator, I pulled the oil out and saw that there was quite a bit of built up crud at the bottom. I scratched at it a bit with a flat blade screw driver and couldn’t believe how much was down there. No wonder the oil wasn’t draining away!


After a thorough cleaning, the filter went back in with a quart of oil all to itself. Another 4 quarts went into the crank case.
While I had Ike up on jacks, I decided to check the oil level in the transmission, front, and rear axels. The axels were ok, but the transmission and likely the transfer case are very low. I’ll be remedying that in a few weeks. The final thing I had to do was replace the broken engine ground strap. With a new strap and mounting hardware, and a few clever ways of getting around various components, the strap was installed.
Ike was lowered, started, and ran for a little while to let the oil circulate through the system. One interesting thing to come of this was how easily the engine started. That ground strap made a huge difference. I’m also not disconnecting the battery for now to see if it will keep a charge now. Hopefully I won’t have an issue with that.