5th Generation Maxima (2000-2003) Learn more about the 5th Generation Maxima, including the VQ30DE-K and VQ35DE engines.

cold weather oil leak?

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Old Feb 18, 2026 | 02:21 PM
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cold weather oil leak?

i live in central Florida and we just recently had the coldest weather in a long. my car was sitting since I had to redo my polyurethane lower engine mounts , so I was waiting for the cold weather to pass and fix it. the car doesn't have heat and I have my van so I wasn't in a rush to fix it. when the cold weather passed I changed them out and took the car for a short drive and the morning after i see a puddle under the car.

has anyone ever experienced anything like this?? it's getting close to 3 years since I put in the 2014 engine, I wasn't expecting an oil leak this soon 😒


Last edited by uptownsamcv; Feb 19, 2026 at 02:16 AM.
Old Feb 18, 2026 | 02:50 PM
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my money is on the upper oil pan seals. only way to know for sure is to remove the trans and FW to get your eyeballs on it and the rear main.
Old Feb 18, 2026 | 08:37 PM
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at first I thought it had something to do with the clutch hydraulics cause the pedal was stuck to the flooor when I got in the car. sucks having to pull the tranny again, I just put a new clutch in 2 months ago.. .
Old Feb 19, 2026 | 08:20 AM
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Originally Posted by uptownsamcv
at first I thought it had something to do with the clutch hydraulics cause the pedal was stuck to the flooor when I got in the car. sucks having to pull the tranny again, I just put a new clutch in 2 months ago.. .
maybe? is it confirmed engine oil? it looks to be coming out of the bell and i would expect the slave to be leaking down the front area of the trans.
Old Feb 19, 2026 | 10:40 AM
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the front of the trans is bone dry, it's definately engine oil.
Old Feb 19, 2026 | 01:05 PM
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Lower temps thicken the oil more, so I don’t think it’s related to the temperature. Try to see where is it leaking from and go from there.
Old Feb 19, 2026 | 01:16 PM
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did you change the rear main when you did the clutch? if so thats where my money would be. half moon seals generally make it 10 years before they start leaking.
Old Feb 20, 2026 | 05:20 AM
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it's leaking pretty fast, I'm thinking it's the rear main as well. i had checked the level, let it warm up than reved it to 4k a few times. when I looked underneath I could see it dripping out.

I had put new rear main seal and resealed the upper pan when I did the swap around 3 years ago.





Old Feb 20, 2026 | 07:57 AM
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yeah im going with rear main if its leaking like that.

FWIW in 25 years of doing this professionally the only time ive seen a VQ rear main leaking is if its been ****ed with. be SURE you buy an OE seal.
Old Feb 20, 2026 | 09:52 AM
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I actually went with Fel Pro. when I did the rear main seal on the original DE I picked up an OEM rear main seal at Nissan and it was a Fel Pro. I never had any issues over 10 years with that engine so I wen't with Fel Pro on the 2014 engine. I won't be doing that again.
Old Feb 20, 2026 | 10:56 AM
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Originally Posted by uptownsamcv
I actually went with Fel Pro. when I did the rear main seal on the original DE I picked up an OEM rear main seal at Nissan and it was a Fel Pro. I never had any issues over 10 years with that engine so I wen't with Fel Pro on the 2014 engine. I won't be doing that again.
NOK is the original supplier but it looks like OE nissan is the best price.

12296-ja10a
Old Feb 20, 2026 | 12:59 PM
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Originally Posted by slvr2KSE5
NOK is the original supplier but it looks like OE nissan is the best price.

12296-ja10a
NOK seems to be the way to go, i've had my 2JZGTE rebuilt ground-up twice. First builder used Fel-Pro but had a Jap specialist shop do the second build and said they won't use anything but NOK on Japanese vehicles and Fel-Pro isn't really the way to go
Old Feb 20, 2026 | 05:43 PM
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I'll definately go OEM this time around.
Old Feb 21, 2026 | 03:19 AM
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If your plan is to R&R anyway … before you do that maybe give this (or a similar product of your choosing) a try.

I used this as a temporary, biding for time, fix in my ‘94 F150. And that was like 7 years ago. I kid-you-not.



Old Feb 21, 2026 | 11:18 AM
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Originally Posted by Turbobink
If your plan is to R&R anyway … before you do that maybe give this (or a similar product of your choosing) a try.

I used this as a temporary, biding for time, fix in my ‘94 F150. And that was like 7 years ago. I kid-you-not.



I've used that and the Blue Devil rear main seal in my Silverado, works and has saved me from replacing my rear main seal 10+ years later lol
Old Feb 21, 2026 | 01:34 PM
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Originally Posted by chrome91
I've used that and the Blue Devil rear main seal in my Silverado, works and has saved me from replacing my rear main seal 10+ years later lol
There’s two testimonials right there from folks not trying to sell anything.

Certainly worth a try, right?
Old Feb 23, 2026 | 08:06 AM
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can confirm the stuff works. used blue devil in my dirt cheap V8 explorer for the rear main. wasnt leaking when i sold it 6 years later
Old Feb 23, 2026 | 01:27 PM
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AT 205/seal lube. I buy it in multiple gallons lol.
Old Feb 23, 2026 | 04:26 PM
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I guess I can try it for now. I ordered the parts already and plan on doing the propper repair though.

Last edited by uptownsamcv; Feb 23, 2026 at 04:28 PM.
Old Feb 24, 2026 | 06:15 AM
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theres a Q50 guy that used bars's leaks for a cracked upper block successfully for over a year now, it def works.
Old Feb 24, 2026 | 08:49 AM
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cracked upper block,what caused that?

i threw in the Bar's like a half an hour ago at the auto parts store. the drive home was 5 miles, I'm letting the car idle for now. as of right now, I'm not seeing any drippage as the car is idling in the drieway.

Last edited by uptownsamcv; Feb 24, 2026 at 08:57 AM.
Old Feb 25, 2026 | 05:16 AM
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this is what i meant by the "cracked head" (cylinder heads)

the guy using the bar's leak had unknown source coolant being mixed with his engine oil, and has slowed down the coolant after further oil changes using bar's leak
Old Feb 25, 2026 | 02:06 PM
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I drove quite a fews miles after putting the stuff in but I think the leak has only slowed down as the oil level has dropped. going to pull the pan and tranny next monday
Old Mar 2, 2026 | 12:15 PM
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as it turns out, it was worst than I thought. a few of the nuts that hold the friction plate on the JWT flywheel came off and put a hole in the oil pan.... the Fel-Pro seals had nothing to do with it but I did pick up all the seals I need at Nissan.. I went ahead and ordered a Nisformance flywheel and ARP pressure plate bolts








Last edited by uptownsamcv; Mar 2, 2026 at 07:25 PM.
Old Mar 2, 2026 | 01:32 PM
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ho lee ***.

im tempted to buy the FW off you but i also think ill be going with the nisformance unit
Old Mar 2, 2026 | 04:42 PM
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Originally Posted by slvr2KSE5
ho lee ***.

im tempted to buy the FW off you but i also think ill be going with the nisformance unit
one of the thread inserts where the pressre plate bolts on to always gave me problems but never came loose. not sure what happened this time, i torqued the friction plate screws all to spec and even rechecked to make sure I didn't miss one.

you can have it for free if you wanna see what a machine chop can do with it. it looks a lil rough but the engine started up and ran fine with it installed.
Old Mar 3, 2026 | 11:24 AM
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im down for that. shoot me a venmo or paypal and how much youll want.
Old Mar 3, 2026 | 06:10 PM
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Originally Posted by slvr2KSE5
im down for that. shoot me a venmo or paypal and how much youll want.
when I get up in the morning I'll take off the friction plate and send you more detailed pics...
Old Mar 4, 2026 | 06:17 AM
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after taking a closer look, it appears that 2 of the thread inserts on the same side came loose.






uneven pressure on the disc and friction plate caused a hot spot which made the plate lift and pop a few of the friction plate screws. one of the nuts made impact on the oil pan causing the hole...




this is the back of the flywheel.

Old Mar 4, 2026 | 08:13 AM
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yeah thats scrap metal. main reason i was going to go with the nisformance unit. all one piece
Old Mar 4, 2026 | 09:57 AM
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Originally Posted by slvr2KSE5
yeah thats scrap metal. main reason i was going to go with the nisformance unit. all one piece
I ordered the Nisformance flywheel monday. I went back later in the evening when I decided to order ARP bolts and noticed the flywheel was marked as out of stock on the site.

more companies need to jump on making solid flywheels so people can ditch the dual mass flywheels. from my experience they arent worth the hassle. the springs in them dont seem to last
Old Apr 2, 2026 | 04:59 PM
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after a few delays I got it back together and running. I really like the Nisformance flywheel, no more chatter. I also went with ARP flywheel and pressure plate bolts.












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