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Old 01-16-2014, 11:56 PM   #1
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Transmission fluid and motor oil change help!!

so my transmission needs a fluid change and so does my motor.


transmission: what is a good fluid to use ? my ax-5 sometimes won't go into gear mostly 1st and sometimes will grind going into gear, whats a good fluid that will help this problem ?? is synchromesh good to use ?

motor: what is a good oil to use ? synthetic? what weight ? i have 90k on my motor. is a K&N oil filter good to use ?

thanks for all input and help !!

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Old 01-17-2014, 12:10 AM   #2
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I recommend synchromesh for the tranny. I had some shifting issues when I picked my Jeep up, changed to synchromesh & it seemed to help. It has my vote.

As for the motor, just go with a good conventional oil. I'm running valvoline in my jeep. For an oil filter I would go with either a MoPar filter or a Wix. My local Orielly's has the MoPar filters in stock & had them competitively priced with Fram, Wix & other name brands.

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Old 01-17-2014, 12:16 AM   #3
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Originally Posted by W5KVV View Post
I recommend synchromesh for the tranny. I had some shifting issues when I picked my Jeep up, changed to synchromesh & it seemed to help. It has my vote.

As for the motor, just go with a good conventional oil. I'm running valvoline in my jeep. For an oil filter I would go with either a MoPar filter or a Wix. My local Orielly's has the MoPar filters in stock & had them competitively priced with Fram, Wix & other name brands.
is the valveoline synchromesh any good ?? and should i run synthetic in my motor ?
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Old 01-17-2014, 12:20 AM   #4
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Synchromesh is made by Pennzoil. It goes in the tranny.

No, you don't need synthetic oil in a 23 year old motor regardless of the mileage. Keep it simple & go with a conventional (non synthetic) motor oil. It's done the job since 1991, why change it now? Know what I mean?
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Old 01-17-2014, 12:25 AM   #5
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ohh because at orally they had valvoline synchromesh and oh so synthetic or not it will have the same results ??
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Old 01-17-2014, 06:28 AM   #6
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ohh because at orally they had valvoline synchromesh and oh so synthetic or not it will have the same results ??
I think what he is saying is...

Conventional motor oil will protect your engine perfectly. Synthetic motor will protect your engine perfectly. You can pick either one and not go wrong.

BUT

Conventional costs less and most of us run conventional. I run Synchromesh in the trans and Wal-mart 10w-30 in the motor. The advantage to a full syn motor oil is mainly longer life. Yes there are other benefits such as cold start protection. But, for a Jeep engine, you are mainly looking at longer life out of the oil.
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Old 01-17-2014, 04:21 PM   #7
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so i should run the valveoline synchromesh in the tranny and either synthetic or conventional 10w-30 in the motor ??
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Old 01-19-2014, 07:22 PM   #8
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so i should run the valveoline synchromesh in the tranny and either synthetic or conventional 10w-30 in the motor ??
Exactly.
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Old 01-19-2014, 08:16 PM   #9
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I'm running 10w30 synthetic in my trans with no problems and regular 10w30 in the engine.

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