2 Nismos transmission failure after highway driving.

CBRich · 09-23-2009, 08:47 AM

You should definitely heed the break in warnings. That would really help. BUT an all out failure like that is still unacceptable IMO. Either way, EVO. There. Now my post has it too. Can we stop that now?

NIZMOZ · 09-23-2009, 09:13 AM

Okay wait a second. You guys took a NISMO up to 140mph with only 300 miles on the ODO? The car wasn't even broken in. No wonder why you had a failure. I have had my car sit at 160 mph for 30 minutes before several times, never had a issue. And that was on a course not public roads.

Quote:

Originally Posted by Baddriver

Ok guys, here is what we know so far. Differential oil boiled/burned and emits an intense stench. We replaced it with Royal Purple diff oils.

I'm also replacing the engine oil (I limped mode remember?) and at the same time installing an HKS oil cooler. Also changed the tranny oil just to be sure. The guy whom I bought the car from has been great and assisting me with everything I need.

I hope my car will be back to normal.

above: the real stinky oil after only 300 miles in the odo. I forgot to take a pick of the deformed drain plug bolt. It has a plastic covering and it was slightly deformed. (the plastic, not the metal parts). Just goes to show how hot the oil was. How could this be? We were going in a straight line. changing lanes was minimal.

I'll know tomorrow if the car is better. I'll prolly Dyno it so it can go 140 mph in a safe environment... see if the diffs boil again (at the same time, get a baseline dynapack reading). better to test it in a shop than in a highway in the middle of nowhere.

kannibul · 09-23-2009, 09:51 AM

Quote:

Originally Posted by Baddriver

Ok guys, here is what we know so far. Differential oil boiled/burned and emits an intense stench. We replaced it with Royal Purple diff oils.

I'm also replacing the engine oil (I limped mode remember?) and at the same time installing an HKS oil cooler. Also changed the tranny oil just to be sure. The guy whom I bought the car from has been great and assisting me with everything I need.

I hope my car will be back to normal.

above: the real stinky oil after only 300 miles in the odo. I forgot to take a pick of the deformed drain plug bolt. It has a plastic covering and it was slightly deformed. (the plastic, not the metal parts). Just goes to show how hot the oil was. How could this be? We were going in a straight line. changing lanes was minimal.

I'll know tomorrow if the car is better. I'll prolly Dyno it so it can go 140 mph in a safe environment... see if the diffs boil again (at the same time, get a baseline dynapack reading). better to test it in a shop than in a highway in the middle of nowhere.

Sorry, but diff oil is really stinky..."burned" or not.

batman_4 · 09-23-2009, 09:56 AM

+1 on having to take it easy during the break-in period. i can't imagine ragging my car out with only 300 miles on the ODO.

RCZ · 09-23-2009, 12:09 PM

I had my first trackday at 600 miles on the ODO or something and My car runs great

Zeto · 09-23-2009, 01:26 PM

Damn I need to check my diff oil.

Baddriver · 09-23-2009, 04:16 PM

yeah, my fault for not heeding the break in.... but there were other 370s on that day, we are all in a convoy, one was another mt, and atleast 3 others were AT. Yes, they all have higher mileage than my car but I'm quite sure that most of them have yet to break the 1200 mile barrier either. the other nismo that stalled had 500++ miles on it with an oil cooler. I was trailing an AT 370 and not overtaking anyone.

we were in a convoy of 18 cars..... more than half of them have low mileage (bnew gtrs and 370s, porsche panamera, r8).

Baddriver · 09-23-2009, 04:18 PM

Quote:

Originally Posted by kannibul

Sorry, but diff oil is really stinky..."burned" or not.

hey kannibul,

the shop/guy I took it to has been working on cars for a while now and whatever smell it was, they say it's not the usual stench

billydsz · 09-23-2009, 04:33 PM

Insanity driving at those speeds with a brand new car (before breaking in the engine). Throw your money away it's easier.

Baddriver · 09-23-2009, 04:50 PM

Quote:

Originally Posted by semtex

Thanks for the update! A couple of FYIs. It is normal for diff oil to stink after it's been used; the bad smell doesn't necessarily indicate that something has gone wrong with the fluid. It's still good that you changed though. I changed both my diff and trans fluid over to Redline at around 2500 miles. (I wasn't having any issues though.) Also, just in case you aren't already aware, DynaPacks are notorious for reading too high. That's just something to be aware of if you're planning to compare your baseline to readings from other makes of dynos. Nice looking Nismo, btw!

hey man! yeah, I will only compare dynapack readings with other dynapack readings. thanks!

the real indication that the oil may have gone too hot is perhaps the molten plastic lining inside the drain plug

but still the opinion that it's extraordinarily stinky is from the shop guys, and they've worked on cars for a while now.

semtex · 09-23-2009, 05:16 PM

Molten plastic lining? That's strange. I did my own fluid swap, and there's no plastic lining on the drain bolt itself. The bolt is steel, and there's washer. Are you referring to the washer? The washer is aluminum though, not plastic. Either way, it sounds like there was some sort of sludge stuck to the bolt, which definitely is not good.

Baddriver · 09-23-2009, 05:27 PM

Quote:

Originally Posted by semtex

Molten plastic lining? That's strange. I did my own fluid swap, and there's no plastic lining on the drain bolt itself. The bolt is steel, and there's washer. Are you referring to the washer? The washer is aluminum though, not plastic. Either way, it sounds like there was some sort of sludge stuck to the bolt, which definitely is not good.

it could be sludge....hmmmm. there were 2 bolts, the one in the pick has something black and stuck to it

we'll seen soon if it's made a difference.

semtex · 09-23-2009, 05:31 PM

Quote:

Originally Posted by Baddriver

it could be sludge....hmmmm. there were 2 bolts, the one in the pick has something black and stuck to it

we'll seen soon if it's made a difference.

Yes, there are two bolts. There's a drain bolt and hole, and a separate bolt/hole for filling. Which pic are you referring to? This one?

That's the drain hole, and all I see is a little residual fluid dripping out.

semtex · 09-23-2009, 05:39 PM

Here is the exploded view of the diff from the service manual, in case anyone is curious.

kannibul · 09-23-2009, 07:12 PM

hmm, methinks the OP is not one speaking from experience.

09-23-2009, 09:56 AM	#34 (permalink)
batman_4 A True Z Fanatic Join Date: Dec 2008 Location: McAllen Tx. Posts: 1,038 Drives: '09 PW 370Z Rep Power: 367	+1 on having to take it easy during the break-in period. i can't imagine ragging my car out with only 300 miles on the ODO. __________________ '09 6spd. Touring: Eibach / SPC / Motordyne / Berk / Z1 / Oneighty / Mines / SSR / Stillen / CFE

09-23-2009, 04:16 PM	#37 (permalink)
Baddriver Base Member Join Date: Jun 2009 Location: Manila, Philippines Posts: 89 Drives: Evo ix, Nismo 370z Rep Power: 264	yeah, my fault for not heeding the break in.... but there were other 370s on that day, we are all in a convoy, one was another mt, and atleast 3 others were AT. Yes, they all have higher mileage than my car but I'm quite sure that most of them have yet to break the 1200 mile barrier either. the other nismo that stalled had 500++ miles on it with an oil cooler. I was trailing an AT 370 and not overtaking anyone. we were in a convoy of 18 cars..... more than half of them have low mileage (bnew gtrs and 370s, porsche panamera, r8). Last edited by Baddriver; 09-23-2009 at 04:33 PM.

09-23-2009, 05:16 PM	#41 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 54 Posts: 5,995 Drives: People to drink Rep Power: 32	Molten plastic lining? That's strange. I did my own fluid swap, and there's no plastic lining on the drain bolt itself. The bolt is steel, and there's washer. Are you referring to the washer? The washer is aluminum though, not plastic. Either way, it sounds like there was some sort of sludge stuck to the bolt, which definitely is not good. __________________ "There are no small accidents on this circuit." -- Ayrton Senna 316.8whp & 248 ft/lbs (Dyno Dynamics) \| 319whp & 256 ft/lbs (DynoJet) (04/23/10) Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

09-23-2009, 05:39 PM	#44 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 54 Posts: 5,995 Drives: People to drink Rep Power: 32	Here is the exploded view of the diff from the service manual, in case anyone is curious. __________________ "There are no small accidents on this circuit." -- Ayrton Senna 316.8whp & 248 ft/lbs (Dyno Dynamics) \| 319whp & 256 ft/lbs (DynoJet) (04/23/10) Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

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09-23-2009, 08:47 AM	#31 (permalink)
CBRich A True Z Fanatic Join Date: Apr 2009 Location: SC Posts: 2,464 Drives: 370Z Rep Power: 544	You should definitely heed the break in warnings. That would really help. BUT an all out failure like that is still unacceptable IMO. Either way, EVO. There. Now my post has it too. Can we stop that now?

09-23-2009, 12:09 PM	#35 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1118	I had my first trackday at 600 miles on the ODO or something and My car runs great

09-23-2009, 01:26 PM	#36 (permalink)
Zeto Track Member Join Date: Apr 2009 Location: North NJ Age: 40 Posts: 766 Drives: 09 Pearl White 370Z Rep Power: 267	Damn I need to check my diff oil.

09-23-2009, 04:33 PM	#39 (permalink)
billydsz Enthusiast Member Join Date: Aug 2009 Location: New Bern Posts: 252 Drives: 9 370z SptCp SRd 7AT Rep Power: 16	Insanity driving at those speeds with a brand new car (before breaking in the engine). Throw your money away it's easier.

09-23-2009, 07:12 PM	#45 (permalink)
kannibul A True Z Fanatic Join Date: Jun 2009 Location: Jenks, OK Posts: 2,281 Drives: 370z Touring/Sport Rep Power: 267	hmm, methinks the OP is not one speaking from experience.