Colorado4x4
Active Member
Greetings! I recently saw just a little bit of oil on the passenger side of my transmission. No oil on the driver side of the transmission. I thought rear main seal but it looked like it’s coming from higher up. Maybe upper oil pan gasket? Then I found this. Is this the classic cracked oil cooler/filter housing? Second photo is from the web because it was hard for me to get a good picture. If it is, seems like it would be good to replace spark plugs and coils (at 70,000 miles now) while I am at it with having to remove the intake plenum? Thanks for your help! - Geoff




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