SO NOT TOO LONG AGO ON MY 03 5AT G35 COUPE IVE NOTICED THAT MY G35 WAS LEAKING OIL SO I WAS LIKE ALRIGHT MAYBE THE OIL FILTER IS LOSE OR THE OIL COOLER-O RING NEEDS TO BE CHANGE SO I THEN PROCEEDED TO CHANGE IT PUT NEW ROYAL PURPLE 5W-30 OIL IN IT AS WELL AS A NEW OIL FILTER AND OIL-O RING CLEANED THE WHOLE BOTTOM OF MY CAR TO THE POINT THAT THERE WAS NO MORE OIL STAINS. THE NEXT DAY I WOKE UP HEADED TO MY CAR HOPING THAT WAS THE PROBLEM AND NOPE STILL LEAKING!!!!! IM SO FRUSTRATED BECAUSE I KNOW I PUT EVERYTHING BACK TO HOW IT WAS TIGHT AND SEALED! WHAT CAN IT BE? THESE LAST FEW DAYS ALSO MY CAR HAS BECOME TO MAKE A RATTLING NOISE WHEN I HIT A CERTAIN RPM AND ITS REALLY WORRYING ME! I KNOW ITS CONNECTED TO OIL PROBLEM, MAYBE BECAUSE OF LOW OIL. IF ANYONE MIGHT KNOW WHAT IT MIGHT BE FOR THE OIL LEAKAGE PLEASE LET ME KNOW!!!!!

 

OMG CAPS,



but you have an A/M oil cooler ?

 

did you check the valve covers? there known to leak on older cars.

 

No I haven't checked my valve covers covers, but would I notice the leak as well through my engine?

 

visually inspect where the leak is coming from.

 

yes the oil can drip down the engine to the ground if the car is standing long enough. Usually the oil is burned up by the heat of the engine but you would still see oil residue. I agree with jdmswag, you need to visually inspect where the leak is coming from. The valve cover is the more common one. It could also be your crank case.

 

@temjinx2 okay I'll double check when I get it lifted in order to see better, can it also be a good chance that the oil pan gasket is the problem in this case? Hopefully it's nothing too serious

 

I would just inspect inspect the car top down since its easier. You can take off the engine cover and inspect the valve covers. It should be pretty obvious if there leaking or not

 

if oil is in a few areas. clean it up and check it again to see where the oil looks like it came from. you can have oil on your oil pan but it could have ran all the way down from the engine.

 

Rear main seal

 

@slim17265 is that a common problem for g35s to be leaking from there as well?

 

I think you left you caps button on...