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87 Duke w/Isuzu 5 speed manual (tranny oil question) by perceptionist
Started on: 10-08-2007 04:09 AM
Replies: 8
Last post by: josef644 on 10-08-2007 03:33 PM
perceptionist
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Report this Post10-08-2007 04:09 AM Click Here to See the Profile for perceptionistClick Here to Email perceptionistSend a Private Message to perceptionistDirect Link to This Post
So I am considering draining my transmission oil and refilling it with fresh oil.

I plan to use 50% Lucas oil Stabilizer. (good idea, bad idea?) your thoughts are welcome on this. I have yet to read anything negative on this product.

I am looking for ideas on the best oil to use in my tranny. What do the tranny gurus recommend for the Isuzu 5 speed from an 87 w/duke.

The transmission has never had any signs of problems since I bought the car about 2 years ago. I am not sure when the last time the trans oil was changed and I am looking for piece of mind on this since I am also installing a new (re manufactured) Duke.

I am hesitant to go by my Hayne's manual in case their recommendation is outdated.

As always, Thanks for all your help!!
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fierodeletre
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Report this Post10-08-2007 04:31 AM Click Here to See the Profile for fierodeletreClick Here to Email fierodeletreSend a Private Message to fierodeletreDirect Link to This Post
I have an 88 duke/isuzu coupe and also would like to know this for almost the exact same reason. I've been told that the product you want is called "Synchro-mesh", but I do not know where to get it or how well it works.

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Jax184
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Report this Post10-08-2007 08:07 AM Click Here to See the Profile for Jax184Click Here to visit Jax184's HomePageSend a Private Message to Jax184Direct Link to This Post
Friends don't let friends use oil additives. Put down the bottle and step away slowly!

Fill the transmission with straight synchromesh and be done with it. That's all you need. Mixing it with anything else is just a bad idea.

http://www.bobistheoilguy.c...ages/lucas/lucas.htm - Have a look at this for one of the reasons why.

The Isuzu should have no problem holding up under a stock or even heavily (hah!) modified 'duke.
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perceptionist
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Report this Post10-08-2007 11:28 AM Click Here to See the Profile for perceptionistClick Here to Email perceptionistSend a Private Message to perceptionistDirect Link to This Post
Jax184,

Thanks that was a good read. So syncromesh it is. Are there variations of syncromesh like conventional or synthetic, different viscosities etc... or is there only one syncromesh?

Thanks
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Synthesis
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Report this Post10-08-2007 11:47 AM Click Here to See the Profile for SynthesisSend a Private Message to SynthesisDirect Link to This Post
Head to your closest GM Dealer, and pick up 2 quarts of Syncromesh for a Manual Transmission. It is the only kind they have in stock.

About 25 bucks total for both.
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Report this Post10-08-2007 12:30 PM Click Here to See the Profile for perceptionistClick Here to Email perceptionistSend a Private Message to perceptionistDirect Link to This Post
Great, Thank you for the info.
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Blacktree
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Report this Post10-08-2007 12:38 PM Click Here to See the Profile for BlacktreeClick Here to visit Blacktree's HomePageClick Here to Email BlacktreeSend a Private Message to BlacktreeDirect Link to This Post
Pennzoil also makes synchromesh oil. You should be able to find it at your local auto parts store. I paid about $6 per quart at Auto Zone.

[This message has been edited by Blacktree (edited 10-08-2007).]

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fierodeletre
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Report this Post10-08-2007 03:16 PM Click Here to See the Profile for fierodeletreClick Here to Email fierodeletreSend a Private Message to fierodeletreDirect Link to This Post
Is the Pennzoil stuff as good?

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josef644
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Report this Post10-08-2007 03:33 PM Click Here to See the Profile for josef644Click Here to Email josef644Send a Private Message to josef644Direct Link to This Post
Thats what I put in mine also. Just above $6.00 at NAPA. I suspect one company makes it all, and just puts it into different colored and labeled containers for different sellers.
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