Oil usage [Archive] - GrandAmGT.com Forum

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Ultralarry
02-04-2005, 12:49 PM
I just bought this car 3 weeks ago. It is a 1999 Grand Am GT, it had 75,000 miles on it. It is in very good condition. Anyway I have put on 1500 miles on it now and yesterday the oil light came on. I let it sit and checked the oil. It did not show on the dip stick. It took two quarts. I went to the dealer and they said it is the PCV valve. There is no oil on my garage floor,nor is there blue smoke when I stomp on it. So could this really be? Just the PCV valve. Thanks for any replies.
Ultralarry

tenspeed
02-04-2005, 07:29 PM
My 96 2.4L engine will eat a quart every 1000-1500 miles. Always has and I have 180,000 miles on it. I change oil and filter every 5000 miles.

What engine do you have and was the oil full when you bought it?

carsarecool
02-04-2005, 10:57 PM
yeah, i heard the 2.4's eat a lot of oil, i thought it was just mine but apparently a lot of peoples' does that. i use mobil 1 and it still does it, im not sure about the 3400. i think any engine will use some with a lot of hard driving

Blackrider
02-04-2005, 11:39 PM
PCV Valves will not eat that much oil that fast. Pretty sure you are burning it.

What Type and Viscosity oil are you using?

Mike Jung
02-05-2005, 06:22 AM
yeah, i heard the 2.4's eat a lot of oil, i thought it was just mine but apparently a lot of peoples' does that. i use mobil 1 and it still does it, im not sure about the 3400. i think any engine will use some with a lot of hard driving

Try using a ACEA A3 rated synthetic motor oil.

Like:
Mobil 1 0W40 synthetic motor oil, ACEA A3 rated, HTHS of 3.6
or
(German) Castrol Syntec 0W30 synthetic motor oil, ACEA A3 rated.

These are European recemmended spec'd synthetic motor oils for like:
Porsche, Mercedes AMG, BMW (non M-series), Audi/VW, etc...


My 3400 engine does not use much oil, that I can tell.

Ultralarry
02-07-2005, 06:02 AM
The oil was full when I got the car. The oil in it is Valvoline 5-30.

intence
02-07-2005, 10:44 AM
How hard were you driving the car? Do you see any blue smoke when you're driving? What about if you let the engine idle for a while (a few minutes), then hit the gas, any blue smoke? Also, check during acceleration. It's easier if someone is driving behind you.

Panacea
02-07-2005, 12:47 PM
Use 10w30, don't use the 5w30. My dad told me to us 5w30 in the winter time and 10w30 in the winter. I did this with my old saturn and my car burned more oil using the 5w30 than it did the 10w30.

So, stick with 10w30 and see if that helps. As for my GA, it doesn't burn much oil. In the past 3 or 4 months I'm down not even a 1/4 off the dipstick.

intence
02-07-2005, 04:05 PM
Using a thicker oil isn't a fix. If it's leaking, and then getting burned, a thicker oil just delays the process. A thinner oil can get through a worn seal easier than a thicker oil, but using the thicker oil doesn't fix anything.

If there's a problem, it will eventually worsen, and you'll notice it with the 10w30 as well, might as well figure out what it is now, and deal with it.

Clyde
02-10-2005, 05:37 PM
check your Oil filter .. is it TIGHT. ive had my GA/GT for nearly 2yrs now and the other day i checked my oil it was WAY low. went to the mechanic right away and told him im suddenly using lots of oil. first thing he asked was when my last oil change was. i told him i should get it in soon. he poped it up on the hoist and sure enough the oil filter was a bit lose and leaking a bit. he said that can happen when the filter gets 'old'

intence
02-10-2005, 11:24 PM
Hopefully it's just a leak, possibly a loose filter. Do you park it in a garage? Any oil spots? You're either leaking or burning, in my opinion i'd rather deal with a leak ... but it has to be going somewhere.

Ultralarry
02-11-2005, 01:25 PM
Found the problem. All the spark plugs were fouled. The valve guides are shot. Dealer is replacing them for free.