ChevyTuffD.A.

Alright, I just dropped a new 357 in my car and right now it has about 3000 miles on it. When I start to get to speeds over about 90 or so and higher RPM's I can smell what appears to be an oil smell. Its not like a burn oil smell but more of an unburnt oil smell. I dont have any oil leaks and I dont recall ever seeing me burning oil out my exhuast. Anyone have any ideas???

93turbo5oh

have you stuck your hand on the back of the block under the cowl? is there any oil in the trans/block area?

Spinner

I get an oil smell too. From what I've figured, it's a TINY dribble from the rear main seal and is slung around and you end up smelling it in the cabin. No harm, no foul, just a little oil smell.

ChevyTuffD.A.

I dont appear to have a leak. At least I know there isnt any dripping onto the ground. It usually only happens if I race someone to a high speed, like say over 100mph, then after the race I smell it for just a minute and then its all back to normal.

944v8inDFW

Have you done amy mods to the PVC or Crankcase breather system? Like a filter on the pass valve cover instead of plumbed to the throttlebody? Just a thought and that could certainly account for some oil smell.

EricTheBald

I would have to wonder if maybe you're getting blowby past the new rings.

I mean; the smell of oil under acceleration strongly implies that you're pressurizing the crankcase and the gasses are finding their way out; dragging an oil mist with them.

ChevyTuffD.A.

Well its not a burnt oil smell tho. It smells like clean/unburnt oil that i am just getting a wiff of.

slopokrodrigez

Can you smell it outside the car as well as in the cabin? Does it make a difference if you have the HVAC fan on or not? Can you look under the inspection cover on the bell housing?

ChevyTuffD.A.

I dont have a cat so i usually just get the no-cat smell out of the exhuast. I dont think it really makes a differance whether the fan is on or not.