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2009 Jeep Wrangler X

2009 Jeep Wrangler X
Project-JK-Supercharged

Sunday, May 20, 2012

Well, after all this time I finally had a weekend to work on my Jeep and get the Rock Krawler HD Deep Sump Transmission Oil pan installed. I also hooked up the B&M auxiliary cooler as planned after draining the entire 8.8 quarts of old fluid using a fill & flush process that gets the old fluid out of the torque converter and other nefarious places. As noted, just dropping the old pan only gets about 4 quarts of old oil. This may be alright if you change tranny fluid frequently, but since my fluid was slightly burnt from being over-heated, I wanted to get all of it out.

You can really see the size difference of the Rock Krawler pan on the right versus the OEM pan on the left.
The deep sump pan combined with B&M auxiliary cooler added an additional 2.2 quarts to the system. Total capacity is now a whopping 11 quarts of tranny fluid. This extra capacity will greatly aid in the overall cooling efficiency of the transmission and, by the design, will help avoid any fluid starvation in the event of an extreme off-road angle one can find oneself in from time to time.
The new pan fits just behind the exhaust cross-over pipe and I had to remove it to lift the pan in place. The pipe is so close and gets so hot that I decided to wrap it with heat-reduction cloth and then sealed it with High-Temp Silicone paint. I also added heat-reflecting tape to the front and sides of the oil pan.




The swap-out, fluid flush and re-fill, which includes a new oil filter with extension tube to reach the bottom of the deeper pan, took about three hours - mainly because of the time to pull and prep the exhaust cross-over pipe.