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After getting my car back from having the oil changed I am having a severe oil leak a day later. I noticed the oil was about a half quart overfull and smelled oil burning. The guy said the Fram filter I got was the wrong one and he used his. There seems to be oil leaking everywhere, down the filter and even down cooler lines on the passenger side. I shut the car off and it still seems to be dripping but can't find the source. I was thinking the Oil temp sensor? Filter? I hope the rear main seal didn't go bad... If it was the pan gasket it wouldn't fail all at once right? Also if it was from an oil overfill issue it would have happened yesterday I believe, not a day later. Also I haven't got to see this car on a lift yet, what the heck is this welded thing is on the bellhousing? Is that a patch??? I sure hope not. Anyone have any thoughts? Thanks oil is running off those two lines on the right side as well. oil dripping off filter and pan
More pics, oil everywhere! Sorry for the dipstick pic but you can see it's about a half inch above the full line nearly. I'm assuming they put the full 6 quarts I gave them in it. Even after leaking oil it is still overfull Oil dripping from everywhere suddenly after oil change Running down those lines on the side of the pan as well (not trans fluid)
Check the oil filter gasket, if it was stuck on the filter boss or seat, and another filter threaded on, it will leak all over. Basically check to see that there's not 2 filter gaskets.
I've seen that happen.
Check the oil filter gasket, if it was stuck on the filter boss or seat, and another filter threaded on, it will leak all over. Basically check to see that there's not 2 filter gaskets.
I've seen that happen.
First thing I thought of was the filter leaking because he said he put a different one on because my Fram full synthetic filter didn't fit. Happened to me on my C5 once but it leaked like crazy immediately. Yesterday I smelled oil but didn't see any major leaks like now. Also how could it get all over the passenger side of the pan and those lines though? The oil pan had a very very small drip somewhere but this big leak happened after the oil change. Front main seal was replaced, if that was bad I'd assume oil would be all over the balancer which it is not thankfully. Would also like to add the balancer and front main seal was just done yesterday as well.
Last edited by seesixvette; Oct 12, 2022 at 11:24 PM.
I gave him the filter Advanced Auto looked up for me for a 2007 base Corvette. Shop said it didn't fit and they put one on... I hope they didn't screw up the threads! Also on the passenger side above those two lines on the oil pan is a small bolt that appears to be wet, what is that for?
Last edited by seesixvette; Oct 13, 2022 at 07:35 AM.
As Jason noted, first cause of sudden oil leak as you describe soon after an oil change is failure to remove the old filter gasket. Might be a bit messy but you should remove the filter now in place & insure that only a single gasket was used.
Also, selecting the proper oil filter is not rocket science. The Fram website lists the XG 10060 as the correct "Ultra Synthetic" oil filter. Is that what was sold to you by Advance Auto? Similarly, the correct Mobil 1 filter is M1-113A.
What filter did the shop finally install?
Well we got the car up on the lift, oil is coming from the rear main seal. The pan has a small leak too and both valve covers. I can't figure out where the dripping is coming from off those two lines either, what are those? Parts store sold me a 3506 Fram filter, it's a 48 on the 07' so the shop did put the correct filter. What gives here, it's like all seals went out at all once after the 5-30w Mobil one oil change!
Last edited by seesixvette; Oct 13, 2022 at 02:54 PM.
Well we got the car up on the lift, oil is coming from the rear main seal. The pan has a small leak too and both valve covers. I can't figure out where the dripping is coming from off those two lines either, what are those? Parts store sold me a 3506 Fram filter, it's a 48 on the 07' so the shop did put the correct filter. What gives here, it's like all seals went out at all once after the 5-30w Mobil one oil change!
Id go with the Mobil 1 filter from here on out. For the what gives, if he did overfill the oil, I read that it can damage seals from the pressure building up. Something has to give, which is the weakest component.
It doesn't start leaking alot until the oil temp gets hot. I drove around about 50 miles and lost maybe 1/4 quart. Still no idea where the oil on those lines is coming from or what those are. The oil temp hit 218 degrees max driving around, kept a close evey on everything. I wasn't ready to have to have the torque tube dropped, that means I'd be doing driveshaft couplers and a torque converter. Big money on labor and then I believe the front cradle needs to be dropped for the oil pan. I did notice the oil pressure sensor reads 2 psi even with the car not running, but I haven't seen any leaks from the sensor. I heard that can leak down onto the bell housing as well. Could the brake cleaner I've been using to clean the oil off the engine have caused these leaks or made one worse?
Last edited by seesixvette; Oct 13, 2022 at 11:25 PM.
It doesn't start leaking alot until the oil temp gets hot. I drove around about 50 miles and lost maybe 1/4 quart. Still no idea where the oil on those lines is coming from or what those are. The oil temp hit 218 degrees max driving around, kept a close evey on everything. I wasn't ready to have to have the torque tube dropped, that means I'd be doing driveshaft couplers and a torque converter. Big money on labor and then I believe the front cradle needs to be dropped for the oil pan. I did notice the oil pressure sensor reads 2 psi even with the car not running, but I haven't seen any leaks from the sensor. I heard that can leak down onto the bell housing as well. Could the brake cleaner I've been using to clean the oil off the engine have caused these leaks or made one worse?
The brake cleaner didn't hurt anything. With the ignition on and engine off oil pressure should be 0. 2 psi isn't horrific but if its off by 2psi when not running what is it when it is? But that isn't the source of the leak. Drastically overfilling can cause a leak or in extreme cases, engine damage. Is your engine the LS2? Sorry didnt notice whatnyear you said and if it was the Grand Sport with the manual transmission and dry sump tank.
The brake cleaner didn't hurt anything. With the ignition on and engine off oil pressure should be 0. 2 psi isn't horrific but if its off by 2psi when not running what is it when it is? But that isn't the source of the leak. Drastically overfilling can cause a leak or in extreme cases, engine damage. Is your engine the LS2? Sorry didnt notice whatnyear you said and if it was the Grand Sport with the manual transmission and dry sump tank.
It's a 2007 Ls2 automatic. It looks like the oil is running down the oil cooler lines almost. Is that a gasket behind where the cooler lines mount on the oil pain? That might be the source or my leak(s).
Id go with the Mobil 1 filter from here on out. For the what gives, if he did overfill the oil, I read that it can damage seals from the pressure building up. Something has to give, which is the weakest component.
You, my friend, beat me to it. Regardless of what else is found by the OP, overfilling an engine with oil, any engine, is a bad idea. On these LS motors, it's a terribly horrible idea. They are bay to bay breathing challenged to start with. Overfill them by a quart (which looks to be about right from the dipstick pic), and youre asking for trouble. Now, be honest with yourself, OP. After the oil change-Did you happen to really get on it on the way home, say run it up to redline in the first 2 or 3 gears? If you did this, with the oil overfill issue you have, there's a damn good chance you blew out a seal, or two. I hope I'm wrong. Overfilling an engine with oil, then running it at high rpm for 10-15 seconds, is a recipe for disaster. Another thing to check is your PCV system. Many times, a poorly connected, or bypassed PCV system will allow the engine to build internal blowby pressure....
It's really suspicious and SUCKS when one gets their car back from being serviced at a shop, and there's more issues occurring with it than when it first went in! Was the shop called "IFFY LUBE"?
Yes I did get on it after it warmed up on the way home to make sure the balancer bolt didn't come loose as they replaced the harmonic balancer and front main as well. Looks like the oil is everywhere, even running down the filter... Either every seal is leaking or somehow it is getting all over everything while driving. I just don't see how oil would be dripping off the filter seeing it's recessed up in the pan along with the bell housing and the oil cooler lines. It only leaks when it gets hot too it seems. I've cleaned everything then watched for leaks but oil ends up everywhere. I'd hate to do the rear main then have it be the pan gasket and have to drop the front cradle after. I'm thinking the oil cooler line is leaking where it bolts to the pan Is one spot.
One last thing, you guys got me thinking about internal pressure. Is it possible the pcv is so gummed up with oil it's not functioning? I used to sea foam my top end on the LS1 yearly at minimum and I'm sure this one was never done with 102k miles. Which port should I pour it into on the intake? looks like I need a quick disconnect tool on the pass side? I want to get it in the pcv system as well. I noticed the drivers valve cover near the firewall has a cap over the nipple on it, but looks factory? Thanks guys
Check the oil filter gasket, if it was stuck on the filter boss or seat, and another filter threaded on, it will leak all over. Basically check to see that there's not 2 filter gaskets.
I've seen that happen.
That happened to me on my very first oil change, some 46 years ago, dumped oil everywhere. I will never forget that, been checking for that ever since then.
well guys I doubt this would effect it but the clean pcv plastic line from the passenger valve cover had a crack in the boot. Also the u shaped pcv hose when I removed it, the nipple on the intake valley pulled out as well. Looks like oil has been leaking from where the nipple presses into the valley, should there be an o ring on it or should I put one on? Seems like it is leaking something from the connection. Also very strange the hose was completely dry inside. The metal nipple flows air through both sides no issue. Could the valley cover itself leak as well? Now I'm thinking the cam sensor could be leaking as well... it's hard to see back there.
EDIT: Fixed both pcv lines and it is still leaking. It's getting worse and literally leaking in two places. It's Definitely leaking down those two coolant lines on the side of the oil pan, almost looks like there is a bolt missing on the side of the pan there but can't see under the car well enough. It's also coming out the weep hole in the bell housing so either cam sensor or rear main or the pan gasket. With the two piece oil seal on the pan can the rear part be replaced with the torque tube out or does the front cradle need to be dropped? Where do I start? Very fishy the car has two major oil leaks now when it barely dripped before taking it to the shop.
Last edited by seesixvette; Oct 16, 2022 at 03:09 PM.
After getting my car back from having the oil changed I am having a severe oil leak a day later. I noticed the oil was about a half quart overfull and smelled oil burning.
Originally Posted by seesixvette
Very fishy the car has two major oil leaks now when it barely dripped before taking it to the shop
Very fishy indeed. Seems obvious the shop f*cked something up when they had your car. Don't let them sell you anything else - like a rear main seal, or a cam sensor, or whatever - until they fix what they messed up.
Very fishy indeed. Seems obvious the shop f*cked something up when they had your car. Don't let them sell you anything else - like a rear main seal, or a cam sensor, or whatever - until they fix what they messed up.
Could have been the slight overfill along with the new front main finally sealing proper might have caused the leak (s) but you never know. Here are some pics, it almost looks like a bolt is missing where I circled on the side of the pan and possibly some sort of plug up there by the starter. Anyone? Is a bolt missing here? Is some sort of plug missing here? Oil running off starter and all over pan. Oil running down starter Possible missing bolt?
Oil leak help!
