Serious oil leak

[dp2453]

Here we go again trying to keep fixin my 95 f350. Pop and I replaced the actuator assy to solve one oil leak, now it appears the rear main seal is leaking. My truck is leaking steady enough to cover the entire bottom passenger side and halfway down my frame rail. Truck is going through about a gallon a week, problem is its my last work truck left and need her daily. Truck seems to have a lot of backpressure and puffs smoke from dipstick when running. I have heard rear mains rarely leak on these monsters, any other ideas where it could be coming from. Thanks in advance for any help or guidance gentlemen.

[Fordboy324]

The oil drain tube for the turbo leaked real bad on my IDI it looked like the rear main.It leaked from the passenger side frame rail all the way over to the top of my trans and the oil drain tube for the oil overflow on the bottom, which made me think that it was my rear main seal...WRONG! I actually Tore the trans and flywheel out and replaced it to only findout that it wasnt it. took it to the shop and they said it was the oil drain tube for the turbo! I have been to a ford dealership and they told me as well that the rear main seal is not very likely to leak on the PSD.If its puffing smoke out of the dipstick when running thats blow by. Im no expert but this my experience.Good luck and I feel your pain. Been there done that.

[crew991]

You might also check the oil pump if there is oil in the intake valley that might be it.I have a 95 & a 97 and the 97 had a bad leak that coated the whole underneath of the truck and it was the hp pump the seal blew out.

[dhanna6powerstroke]

There are also threaded plugs in the head that have an "o" ring on them. I have seen those "o" rings split and just poor oil.