Questions about oil cooler and differential gear oil

Rhett · 04-17-2010, 04:05 AM

Hi!

I have the 2009 370z with touring and SP. My questions are as follows;

1. When is the rear differential gear oil changed? By maintenance manual, Nissan recommends to change it around 30k miles. But, some people say that it should be changed within 2~3k miles. Which one is correct?

2. I know that the high temp of engine oil has been a hot issue only for the 370z for severe driving conditions, especially during Summer. Do I have to install oil cooler on my z? If do, which one is the best? I know that this question is too silly. Will you recommend the cheaper and good one? ^^ Stillen is too expensive. Also, will you let me know auto shop to install the oil cooler system around Seattle?

Thanks

Seongkeol in Seattle

Scott @ RA · 04-17-2010, 04:15 AM

Every 2-3,000 miles is WAY to often to be changing your diff fluid. The manual does say every 20-30,000, but I recommend every 15-18,000 miles or so. More often when tracking or constant hard driving. Same goes for the manual transmission's oil.

CBRich · 04-17-2010, 08:05 AM

There are tons of oil temp threads. Are you tracking the car regularly? No? Don't get one.

Rhett · 04-17-2010, 01:33 PM

Scott! Thanks a lot!

Rhett · 04-17-2010, 01:45 PM

Quote:

Originally Posted by CBRich

There are tons of oil temp threads. Are you tracking the car regularly? No? Don't get one.

I am not tracking the regularly. Thanks!
The same oil temp problem was issued in Korea last year, then Nissan Korea made a decision to install the oil cooler with free to all the 370z in Korea. There is a forum, "club-z" in Korea like my350z or 370z forums. Club-z made it!

04-17-2010, 04:05 AM	#1 (permalink)
Rhett Base Member Join Date: Apr 2010 Location: Seattle, WA Posts: 51 Drives: 09 370z Touring SP M Rep Power: 15	Questions about oil cooler and differential gear oil Hi! I have the 2009 370z with touring and SP. My questions are as follows; 1. When is the rear differential gear oil changed? By maintenance manual, Nissan recommends to change it around 30k miles. But, some people say that it should be changed within 2~3k miles. Which one is correct? 2. I know that the high temp of engine oil has been a hot issue only for the 370z for severe driving conditions, especially during Summer. Do I have to install oil cooler on my z? If do, which one is the best? I know that this question is too silly. Will you recommend the cheaper and good one? ^^ Stillen is too expensive. Also, will you let me know auto shop to install the oil cooler system around Seattle? Thanks Seongkeol in Seattle

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04-17-2010, 04:15 AM	#2 (permalink)
Scott @ RA Enthusiast Member Join Date: Feb 2010 Location: So Cal Posts: 410 Drives: Ridiculously Fast Rep Power: 15	Every 2-3,000 miles is WAY to often to be changing your diff fluid. The manual does say every 20-30,000, but I recommend every 15-18,000 miles or so. More often when tracking or constant hard driving. Same goes for the manual transmission's oil.

04-17-2010, 08:05 AM	#3 (permalink)
CBRich A True Z Fanatic Join Date: Apr 2009 Location: SC Posts: 2,464 Drives: 370Z Rep Power: 544	There are tons of oil temp threads. Are you tracking the car regularly? No? Don't get one.

04-17-2010, 01:33 PM	#4 (permalink)
Rhett Base Member Join Date: Apr 2010 Location: Seattle, WA Posts: 51 Drives: 09 370z Touring SP M Rep Power: 15	Scott! Thanks a lot!