NatesK24

I have a 01'LS430 with 164K on it, it's my son's car, iv'e been trying to figure out what the cause of all the problems are since he stopped driving it. For one I notice that coolant was leaking it seems like from the driver side front corner. I jack the car in the air and NO leaking from the upper/lower radiator hoses. So i go and try and burp the coolant system and as the car was idling and i fill the funnel with OEM coolant, a milky substance starts coming up. I turned the car off and pull the distick.........NO milky on the dipstick! The car ildes great with NO CEL, NO SMOKE out of the exhaust........don't know where to begin to trace this issue! So then i left the car to sit on the street and after a week or so i noticed it spewed out oil and coolant, from what it looks like without me touching the car, I go and drive the car onto my driveway, I have a incline of sorts, then I noticed that the car in drive barely got up the driveway with me giving the car gas, It revved up and the car was barely moving........ANY INFO would help me..............THANK YOU CL

430SLOwner

The most common cause of oil in the coolant in an LS 430 is a blown head gasket....

bbtri

It could be the radiator is leaking between the transmission cooler and the engine coolant. Look at the transmission dipstick and see if it's milky. Revving and barely moving sounds like a transmission issue.

Bocatrip

Sounds like it could be either head gasket or trans cooler issue. Head gasket is fairly uncommon for our cars unless overheated or was running very low on coolant. Owners of our cars rarely check overflow tank. Our cars do have a tendency to run low on coolant if not checked regularly. Good luck. Let us know what you find.

NatesK24

THANKS fellas i'm going to check the trans.dipstick first then proceed to something else!