Is it good to do a transmission flush on my G35 w/ 76K?
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06-22-2008, 01:35 PM
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#3
06-22-2008, 03:12 PM
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Has it ever been changed out before?
If not: DO NOT FLUSH IT. The transmission is used to the old dirty fluid working inside of it. It's already been well soaked into the clutch packs. The best thing to do in this situation is to drain a quart or two and then fill it back up with that much of fresh fluid (mixing old with the new). Then after a few oil changes do the same thing again... and again. This will slowly replace the old worn out fluid with the fresh while letting all the parts get adjusted to the new lubricant.
If you have changed the fluid before: Just continue to change it, if it's still been awhile though maybe drain half and then fill up half with the new fluid.
I'd never get a flush. We'd do that at the dealer and within a year the tranny would be back in for another service...
If not: DO NOT FLUSH IT. The transmission is used to the old dirty fluid working inside of it. It's already been well soaked into the clutch packs. The best thing to do in this situation is to drain a quart or two and then fill it back up with that much of fresh fluid (mixing old with the new). Then after a few oil changes do the same thing again... and again. This will slowly replace the old worn out fluid with the fresh while letting all the parts get adjusted to the new lubricant.
If you have changed the fluid before: Just continue to change it, if it's still been awhile though maybe drain half and then fill up half with the new fluid.
I'd never get a flush. We'd do that at the dealer and within a year the tranny would be back in for another service...
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06-22-2008, 04:56 PM
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#5
06-22-2008, 06:03 PM
Like Homie said, don't flush it. Actually flushing really isn't recommended by Nissan at all. They would prefer you to drain the tranny (3 QT and 100ml) every 30K miles. I never replaced my tranny fluid until 60K because that is what the schedule recommends. I did an initial flush of the tranny and followed it up a month later with another flush. My fluid really wasn't bad at all. Still a bit red, but no real burned smell.
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06-23-2008, 09:11 AM
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Thanks Dave... I think I will just drain and refill the fluid... Usually how many qts should I add after drain, 3 or 4 qts? or just measure the old fluid volume and add same amount?
BTW, mine is 2003 G35 coupe AT.
Thanks
BTW, mine is 2003 G35 coupe AT.
Thanks
Originally Posted by DaveB
Like Homie said, don't flush it. Actually flushing really isn't recommended by Nissan at all. They would prefer you to drain the tranny (3 QT and 100ml) every 30K miles. I never replaced my tranny fluid until 60K because that is what the schedule recommends. I did an initial flush of the tranny and followed it up a month later with another flush. My fluid really wasn't bad at all. Still a bit red, but no real burned smell.
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06-23-2008, 03:07 PM
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06-27-2008, 09:37 PM
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Yesterday, I drove 50 miles to the nearest Infiniti dealer for the 60K service, but I didn't do that finally.
The service manager told me that they just drain and refill the ATF not flush it. Flushing ATF is not recommended by infiniti dealer.
He also told me that they just drain and refill the coolant not flush it either.
Then I really don't know why I came to dealership for this kind of service.
I just canceled the appointment and left...
Today I got a case of matic J ATF $13.95/qt, I know this price is not good, but there is only one nissan dealer within 40 miles.
I also got 1 gal Nissan coolant and 2 qts mobil1 75w-90 gear oil.
I am going to change the ATF, coolant and differential oil during this weekend.
The service manager told me that they just drain and refill the ATF not flush it. Flushing ATF is not recommended by infiniti dealer.
He also told me that they just drain and refill the coolant not flush it either.
Then I really don't know why I came to dealership for this kind of service.
I just canceled the appointment and left...
Today I got a case of matic J ATF $13.95/qt, I know this price is not good, but there is only one nissan dealer within 40 miles.
I also got 1 gal Nissan coolant and 2 qts mobil1 75w-90 gear oil.
I am going to change the ATF, coolant and differential oil during this weekend.
#9
08-26-2008, 10:07 PM
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Question for Q45Tech
Hi,
I am not a liberal arts type, nor am I an engineer.
My question is, bottom line, is it or isin't it good to take the car to the dealer, spend the 165 and get the tranny flushed the right way at 30-40k mi?
I understand your point, but so many differing opinions here, and I plan on keeping the G for a while. I have 50k on it now, and its paid for, so I am not trying to get a new one due to carelessness.
Your opinion is appreciated.
VMF
Thanks.
I am not a liberal arts type, nor am I an engineer.
My question is, bottom line, is it or isin't it good to take the car to the dealer, spend the 165 and get the tranny flushed the right way at 30-40k mi?
I understand your point, but so many differing opinions here, and I plan on keeping the G for a while. I have 50k on it now, and its paid for, so I am not trying to get a new one due to carelessness.
Your opinion is appreciated.
VMF
Thanks.
#10
08-27-2008, 02:31 PM
#11
08-27-2008, 05:37 PM
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Whoa! $165 for a tranny flush?
My volvo dealer used to charge me $89.
I wanted to add another question to this thread. Has anyone been swapping to synthetic in their auto trans?
I will be having the dealer perform my first tranny service at 40k miles, personally. I would have done it at 30k if I owned the car at that time.
My volvo dealer used to charge me $89.
I wanted to add another question to this thread. Has anyone been swapping to synthetic in their auto trans?
I will be having the dealer perform my first tranny service at 40k miles, personally. I would have done it at 30k if I owned the car at that time.
#12
08-31-2008, 10:47 AM
Many are confused about flushing!
Chemical flushing involves adding [11 ounces] solvents to ATF and exercising the AT thru all gears [5 minutes each] and reverse to circulate the solvent everywhere.
Then exchange 90-100% of ATF to remove solvent and worn clutch material/varnish in valve body and systems. The solvent needs heat 174F to properly function thus the 30 minute exercise proceedure.
* WATCH OUT for short cuts in the circulation proceedure to save time
THEN
A PROPER exchange machine uses the pumping power of the AT itself as it flows toward the in rad heat exchanger at 20 psi.
The return line does not go direct to the pan but cools the rear planterary first so manually letting return run dry can fry the tranny fast!!!!!! in minutes/seconds.............why the machine uses the exact amount pumped in to force out the exact amount of new ATF.
Chemical flushing involves adding [11 ounces] solvents to ATF and exercising the AT thru all gears [5 minutes each] and reverse to circulate the solvent everywhere.
Then exchange 90-100% of ATF to remove solvent and worn clutch material/varnish in valve body and systems. The solvent needs heat 174F to properly function thus the 30 minute exercise proceedure.
* WATCH OUT for short cuts in the circulation proceedure to save time
THEN
A PROPER exchange machine uses the pumping power of the AT itself as it flows toward the in rad heat exchanger at 20 psi.
The return line does not go direct to the pan but cools the rear planterary first so manually letting return run dry can fry the tranny fast!!!!!! in minutes/seconds.............why the machine uses the exact amount pumped in to force out the exact amount of new ATF.
#13
09-12-2008, 11:38 PM
Originally Posted by Q45tech
Please don't change your ATF at 30k intervals because replacing transmission after warranty is our most profitable job. We have children in college and boats to pay for and tools to buy.
Study pan cleans and filter replacements along with 100% fluid exchanges.
Study pan cleans and filter replacements along with 100% fluid exchanges.
Not changing your tranny fluid on higher mileage transmissions is an old wives tale from the days of two and three speed auto transmissions (60's and 70's).
Not replacing your tranny fluid in a modern auto trans is crazy. It is totally safe to change your fluid at 76,000 miles. You can pay now, or be a contributer to the Q45 tech children's college fund.
#14
09-15-2008, 02:54 AM
After reading all these replies I'm no wiser! To be safe I'll change the fluid. But need this answered.....
Have just bought 03 vq35DE. Coming up to first tranny oil change
35k (klms). As they aren't sold here in Australia, dealers don't know (or won't tell me) much about them. Anyone know what is the best AT trans oil to put in? I have choice of Nissanmatic type D or J, but don't know the diiff.
Have just bought 03 vq35DE. Coming up to first tranny oil change
35k (klms). As they aren't sold here in Australia, dealers don't know (or won't tell me) much about them. Anyone know what is the best AT trans oil to put in? I have choice of Nissanmatic type D or J, but don't know the diiff.
