We are on the road near Las Vegas. Temps are over 100 F and used th airconditioning (1998 C230 MB). We noticed while climbing up hill over
3000 ft that as soon as we turned on the A/C we got some apparent blow by from the Transmission. Created lots of white smoke as it hit the exhaust system. It has happened twice each time maybe 1 cup fluid leaked out. Doesn't seem to coming out from the pan but maybe higher up in the trans area. What might be going on here. In cooler San Diego area without hill driving we see no problem or leakage anywhere. Just at hot hard driving conditions. Is there some sort of relief valve function going on here. Thanks for your tips.Stuck in Las Vegas
Larry