oil leaks while running

Asked by GuruD9FJTG Sep 05, 2023 at 09:25 PM about the 2003 Ford E-Series E-350 Super Duty Cargo Van

Question type: Maintenance & Repair

after long driving when i stop i sea pinkish/red oily pool under my e350 super
duty van.once i stop overnight i do not see any oil marks on my driveway.

3 Answers

310,255

Red/pink color is transmission fluid, the fact that it leaks when driving can be a few things, the front pump seal is getting worn, the transmission is overheating due to a plugged cooler. A scanner should have the ability to read transmission temp as you drive in live data mode, the front seal will be obvious to a transmission shop. Get it checked before it is winds up costing you a transmission.

1 people found this helpful.

Initially after finding oil on the driveway I took the van to my mechanic who said the rear main seal was leaking.I poured 16.9 bottle of Bar's leak Rear Main Seal Repair with the next oil change and drove the van for a while.At next oil change I asked the mechanic to check if there is any leak in that area and he found none.Recently I noticed when I stopped after a long drive on hot day with a loaded cargo trailer behind there was a small puddle red/pinkish oil like like liquid on the driveway. I changed the position of the van and parked it overnight.I found no new signs of leakage under the van.all my oil levels are pretty much ok.I did not use the a/c on this trip and inside the cabin it got pretty hot.There is no gauge to tell me that my transmission got hot .There was no malfunction of transmission . I am wondering where this initial pool of red/pinkish liquid is coming fro.I see some wetness under between engine and transmission but no dripping.I would appreciate your thoughts.Look alike when start to brake on downhill slop my van leaks leaving a trail behind till I stop when a puddle. Thanks

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