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 Post subject: I need some help
PostPosted: Sat Feb 29, 2020 10:39 am 
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Joined: Fri Sep 26, 2008 6:23 pm
Posts: 93
Location: Kingston,NY
I have a few questions about my 72 240...

What is the best/recommended trans fluid to use? (manual 4spd)
What is the best/recommended diff fluid to use?
Where can I find the square tool to get the trans drain nut off?
Thanks :thumbs_up:


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 Post subject: Re: I need some help
PostPosted: Sat Feb 29, 2020 10:51 am 
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Joined: Fri Sep 26, 2008 6:23 pm
Posts: 93
Location: Kingston,NY
I just figured out the drain nut tool :lol:


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 Post subject: Re: I need some help
PostPosted: Sat Feb 29, 2020 1:17 pm 
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Joined: Mon Jun 30, 2008 2:16 pm
Posts: 1181
Location: Ansonia, CT
Hi RIF,

Did you discover the 1/2" ratchet extension works pretty good?

I've always used 80-90W gear oil in both my tranny and diff. I'd stick with a good brand like Castrol or Valvoline. My 240Z has 192K miles and no tranny or diff issues. Best to change the lube when it's warm.

FYI, I also use Castrol GTX 10W-40 for my engine oil. The car still has "like new" compression and uses less than 1/2 quart in 3,000 miles. The valve train is spotless. No need for exotic lubricants or additives.

Regards,

_________________
John Kish
1971 240Z - original owner


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 Post subject: Re: I need some help
PostPosted: Sun Mar 01, 2020 1:35 pm 
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Joined: Fri Dec 23, 2016 7:11 am
Posts: 678
I'll second what John said.

My only addition is that the 80-90 gear oil you choose should have a gl-4 rating (soft "yellow" metal synchros). I was surprised at how few choices there are in oils that meet that spec.

For engine oil I would say to use a zinc additive with your oil if you choose one that isn't already blended with it.

Rotella 15-40 diesel and Valvoline vr racing oil both have it and work well. It's used to be a common component in motor oil and is needed for protection against wear on flat tappet camshafts.

Jay


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