Street King

Just had a question about why would oil show up in the coolant system, is any oil normal?

DamonB

In a boinger you'd have to have worn valve guides and a blown head gasket. Oil in the water would be the least of your worries

On an FD I suppose it could intermix through the turbo bearings/seals? That's the only place I can think of where oil and water are in the same vicinity, but I am not sure if it's actually possible since I am not exactly sure how the water jackets are shaped within the turbo housings. I don't know how it could intermix in the motor itself without you having blown o-rings.

BigIslandSevens

iTrader: (4)

Maybe threw the dowel pin o-rings into the water chambers. That o-ring is a high pressure oil passage sealing point. Only other place i could think of besides turbo like DamonB said.

Hyperite

Are there newer hoses in your cooling system? If so, it could just be some reside coming off in the mix, nothing to worry terribly about, but might want to change the coolant soon. If it's truely oil, you probably have blown O-rings in the motor, I don't think mixing in the turbos would be very likely without some serious cracking.
~Tom

Street King

I serioulsy doubt it could be a totally blown O-ring as I have zilch start up smoke and I never have to refill my coolant. I will do a coolant change pretty soon. This started to happen when I went with synthetic oil, the smaller molecules get's into places where it normally won't leak. I know it is normal to have some oil crud when you pull up the coolant dip stick, but like I said, with the change to synthetic it's just a little more crud.

Had my turbos taken off and checked a while back and they are fine.

Plugs burn in perfect color.

Always started 1st time I turn the key. Car runs like a champ.

Mr rx-7 tt

iTrader: (5)

When the car is cold sometimes oil will seep through the water o-rings. When it warms up they seal better. Most 7 do it, not a problem.

Street King

That's what I was thinking, I drive it on the weekends sometimes so it's cold most of the time and being synthetic oil isn't helping it in that case.

Thanks