pahanorlando

iTrader: (5)

It is known that i35 engine leaks oil
I was wondering how you guys fighting it
Do you simply add oil or use higher number oil?

BigLou55

iTrader: (6)

well if the engine leaks oil you would want to find the leak and repair it properly, now if its burning oil you have a different problem

pahanorlando

iTrader: (5)

Sorry i meant burning oil)

tigersharkdude

iTrader: (20)

VQ35's are known to burn oil

pahanorlando

iTrader: (5)

So is it better to add oil or put in like 20w-50 oil grade?

DavefromCA

Just add the oil that it should take....

pahanorlando

iTrader: (5)

Well, I am loosing over 5 quarts or oil between oil change, you think it's burning or also leaking?

braindead5400

If you're losing that much oil I don't think your car would be functioning. There wouldn't be any oil left for you to change. If you were losing that much you'd definitely notice puddles/spots of it under your car after parking for awhile which would indicate a leak.

pahanorlando

iTrader: (5)

thats weird because since changing oil, the dipstick was at low twice already and its been only 2000 miles. I did not notice any oil on driveway as well.

infiniti medic

How many miles on your vq35de. The car only holds like 4 and 3/8 qrts. So your burning about 2.5 qrts every three or so months. If you are adding oil when you cant see it on the dipstick. What is your oci? What kind of oil? Dino or synthetic and what weight. If you change oil and put in 5 quartz your over filling. Do you have smoke coming from your tail pipe. You state no puddles or visible leaks. Your rear vc could be a culprit, chech the backside of your motor. Or side closest the fire wall as your engine is tranversly mouted. Do you see oil drips that burn away and never touch ground 2nd to motor being hot.

pahanorlando

iTrader: (5)

Got 140k miles. Already changed both valve covers. You think may be since I deliver pizzas on the car it might burn oil much faster?

ef9

iTrader: (8)

If you are burning that much oil, check your spark plugs. They may be well coated with a thick layer of oil.

If it aint burning that much oil, you have a really bad oil leak and you should tend to it right away.

infiniti medic

These cars are well known for burning oil. Unfortunately you are stop and go while working. Which could be the problem. With that being said, you need to find out what the problem is, as was said earlier. If you are burning that much oil you could do internal damage. Until you can figure it out or pin down how much your burning just make sure you keep it topped off. Unfortunately, I think we are all trying to figure out a problem that is part of life with the older vq35de.

infiniti medic

Bueler, bueler lol

SKYDRIFTER350

Check your oil frequently & keep it full. then drive.

infiniti medic

I agree as I said before. Fill and drive. Get it checked and let us know. I myself would love to find that answer to the life long oil burn question. I myself think once again **** poor design and blow by at piston rings or poor valve design. Lol it just sounds good

infiniti medic

No, it does really urk me.

pahanorlando

iTrader: (5)

Dont know what to say bro. Didnt find any leaks and driveway clean. I wonder if take car to dealership regarding oil burning, what would be their solution?

SKYDRIFTER350

Why spend money? Losing some oil for a 10 year car is not too out of the ordinary. How much oil is it really losing?

Fill & drive....or overhaul the motor for like $5000.

pahanorlando

iTrader: (5)

^

select127

iTrader: (4)

where did you have your valve covers replaced and cost?

pahanorlando

iTrader: (5)

Did it by myself. Brought from Dave B for about $40 each.

pahanorlando

iTrader: (5)

I took a picture under the engine. Its really oily. Anyone have idea what might be leaking?

BigLou55

iTrader: (6)

^^^^im inclined to say thats tranny fluid based off the far drip color but I dont tranny fluid leaks there, not sure either...rear main seal is a rare leak but the upper oil pan also leaks there and could be the culprit(based off that you changed your vc gaskets and they arent leaking again.)

Infi30t

I've been following you and this car on the board here and you seem to have nothing but problems... May be time to think about buying a better I35 and selling this one. Doesn't seem like it has been well taken care of...
But I would take this to a well trusted shop and just have them pinpoint it. They will probably pressure wash the spot or degrease it in some way and then they will be able to find it. That is where I would start. Let someone else pinpoint it and then you can go from there about fixing it...