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Question DetailsAsked on 10/25/2016

Is it OK to use friction modifier in an automatic transmission ?

I am getting a shutter at times at 40-55 mph and up and down shifting on a 2006 Chrysler town and country.

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2 Answers

Voted Best Answer

Yes, but short term fix. Not permanent, can be done two to three times then will need rebuilt or if it doesn't work, it needs rebuilt now.

Answered 3 years ago by Ricardo742



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Answered 3 years ago by Member Services


Adding such an additive is likely to damage the transmission - I would just get it fixed right immediately - and a friction additive might have no effect on your transmission shifting anyway. That is basically for cars with conventional shift "bands" which have to be adjusted periodically - and many Chrysler/Dodge products use a different system. Problem could be with the hydraulic valves, shifter solenoid, etc. If you don't want to possibly trash this transmission, don't add additives to it which it was not designed for - get it properly diagnozed now, could save you many thousands in overhaul or even total replacement costs down the road.

Could also be, if you have not been doing your periodic maintenance or have been getting it done at an oil change or muffler places that has just been slipping a tube down the filler tube and drawing the old fluid (or about half of it anyway) out and then putting in new, that they have not been changing the transmission filters and the filter(s) are plugging up, causing low pressure in the hydraulic system, hence uncertain or drawn-out shifting. Some or most Chrylser/Dodges in recent years use internal filters - ours has two, a pan flat filter and a spin-on can filter - both of which (another case of idiotic car engineering) require that the bottom pan on the transmission be pulled off and put back on every - oh, what is it - 15,000 miles as I recall.

Or, alternative causes - low fluid level (causing low pressure in the system), or too high a fluid level, causing foaming which also makes for poor shifting and commonly overheating and "smoking" or burning of the transmission fluid too.

Answered 3 years ago by LCD

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