There is a leak on my driveway in the middle of the vehicle. It’s about 1 inch across every time I drive it. Looked under it and it looks like the transfer case skid is wet. What do you think it is?
What vehicle? 1999 Toyota 4Runner Limited
How many miles? 175K miles
Do you wheel it often? No.
Diagnosis by phone: You’re going to think this is brilliant, but I think the transfer case is leaking. (OK, so maybe I’m just good at pointing out the obvious.) Could be one of the seals, or it could be that the case is cracked.
Final Diagnosis: Upon further inspection the leak is coming from the front output shaft seal.
Solution: Replaced the front output shaft seal and topped off the transfer case. No more leaks in the driveway. This is about a 30 minute fix and the seal is inexpensive, but worth it.