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Old 09-25-2006, 02:29 AM   #1 (permalink)
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Default Mystery Oil Leak

I performed the first oil change on my Forenza today.

- Took off filler cap.
- Took out dip stick.
- Drained oil. I noticed that even though this was the car's first oil change, there was no crush washer on the drain plug. I expected to find one.
- Replaced drain plug without a crush washer, because there was none to begin with.
- Removed oil filter and replaced with the appropriate model from Kragen. I primed the gasket before installing. I've always just tightened these by hand. I generally don't stop tightening until I can no longer turn the filter with my bare hands.
- Manual calls for 4.2 quarts, so I put 4.25 in for good measure.
- Checked for visible leaks. None found.
- Ran the car for two minutes, then let the oil settle for five minutes.
- Checked the oil on the dipstick and poof! There's no oil in there. Doubleyou tee eff?
- Rechecked for leaks. None found. Added .25 quarts of oil and rechecked dipstick. Says I'm a quart low. Didn't know what to think, drove car home.
- Four hours later, checked oil again. Registering a full quart low on the dipstick so I added .25 quarts again. Now it says I'm about 2/3 of a quart down.
- Checked AGAIN for visible leaks and spots on the ground under the car. Nothing there!

Any ideas where my magical disappearing oil is going?
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Old 09-25-2006, 05:21 AM   #2 (permalink)
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My quess is that the oil quantity amount you referenced is the amount WITHOUT a filter replacement factored in. Can you find another reference oil change quantity source to verify?
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Old 09-26-2006, 12:38 PM   #3 (permalink)
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I considered that possibility. I looked around the `net a bit and didn't find anything. I don't think very many Forenza owners are DIY types. I was hoping to find information on fill amounts, and washers. But I got nothin'. I added about half a quart extra, which is way to much to account for the filter alone... and I filled the filter before I put it on the car, anyway. Do any of you Forenza owners do your own oil? How much do you put in? Are the dipsticks on a Forenza just retarded and measuring wrong, is the manual wrong about fill amount? I checked for leaks again yesterday and didn't find any. No oil under the car when it's parked, either.
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Old 09-26-2006, 07:40 PM   #4 (permalink)
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I don't know if this would play in or not, but from what I understand there is a washer that you have to replace (if it needs to be) when you take off the bolt to drain the oil out. I am wondering if you didn't replace or put it back on and there may be a "suction" thingy going on becuase of it.
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Old 09-27-2006, 12:11 AM   #5 (permalink)
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Quote:
Originally Posted by jurupa
I don't know if this would play in or not, but from what I understand there is a washer that you have to replace (if it needs to be) when you take off the bolt to drain the oil out. I am wondering if you didn't replace or put it back on and there may be a "suction" thingy going on becuase of it.
I was looking for that washer when I took the drain plug off. There was none there though. It was just the plug, screwed into the pan. Remember, this is the car's first oil change since it rolled off the line at the factory, so if there was supposed to be a washer there, the factory sure as hell shouldn't have forgotten it! So I replaced the plug without a washer again. :shrug:

I added another 1/8 quart of oil and it seems to be holding there, between the two marks on the dipstick.
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Old 09-27-2006, 12:18 AM   #6 (permalink)
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just missing oil, or is there spots
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Old 09-27-2006, 12:24 AM   #7 (permalink)
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Quote:
Originally Posted by Zipper
just missing oil, or is there spots
I've pretty much ruled out leaks... there doesn't seem to be any oil on the ground under the car. It's just that I had to put 5/8 of a quart more than the manual called for before the dipstick started registering it.

So to answer the question: just missing, not spots.
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Old 01-13-2009, 07:40 AM   #8 (permalink)
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Quote:
Originally Posted by zaarin View Post
I considered that possibility. I looked around the `net a bit and didn't find anything. I don't think very many Forenza owners are DIY types. I was hoping to find information on fill amounts, and washers. But I got nothin'. I added about half a quart extra, which is way to much to account for the filter alone... and I filled the filter before I put it on the car, anyway. Do any of you Forenza owners do your own oil? How much do you put in? Are the dipsticks on a Forenza just retarded and measuring wrong, is the manual wrong about fill amount? I checked for leaks again yesterday and didn't find any. No oil under the car when it's parked, either.

yea... there wasn't a washer on my two new Forenza's either (so what...it doesn't leak there) And yea... the oil dip stick is finicky. You really do have to check the oil when "it's warm"... not when you get home after driving and "it's hot".

Maybe there isn't much x-s capacity in the pan? And it has to drivel down? The last time the dealer performed maintenance; I checked after driving home and the dip stick was well above the level indicator on the stick. I think it was a mistake on the dealers part. Who knows. I really don't know why it's not correct (sometimes).


4.2 quarts seems right on the change. Check the oil on a flat surface when it's warm but before driving... ??
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Old 01-16-2009, 06:17 PM   #9 (permalink)
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maybe your engine is burning oil.
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Old 01-16-2009, 11:19 PM   #10 (permalink)
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The Forenza/Reno can take as little as 4.5 but as much as 5 quarts, with filter. I change oil on these all day, so that's what I've found. Another thing to consider is that if you're using bottled oil, you won't get 5 quarts of oil out of 5 bottles. yes, I know they're 1-quart bottles and I'm sure they contain a whole quart, but the likelyhood that you'll get every tiny speck of oil out is almost none. I would bet you'd use pretty close to all 5 bottles of oil. As long as the total is somewhere in the range I just said (4.5-5Q) once the dipstick says full, you're fine...no need to panic about "lost" oil.
As for the drainplug gasket, I've not seen one entirely without one, but I do know that the factory gasket is aluminum, where the replacement one from Suzuki is copper....just FYI. Without changing the drainplug gasket at least every few oil changes, they will indeed start to leak.
On a side-note, oil filters other than GMDAT filters seem to leak MUCH more often than the OEM parts. I'm not sure why aftermarket filters just don't seem to seal nearly as well, but that's just what we (all the techs at my dealership) have seen.
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