Hey everyone new to the site and am learning a lot. About ready to change my tranny fluid and my mechanic reccomended filling with 50% synthetic. Will this help the tranny. Or should I go with 100% synthetic for the extra cost. I tow a 30 ft. 5ver and plan to change every year. Thanks for the help.

 

I run Amsoil in mine and I have been very happy with it. I tow a 32' fiver. You can go about 30K between changes so it pays for it self in time saved alone. I'd go 100% if your going to go at all.<br><br>Glenn

 

Chief:<br> You didn't say whether you had an auto or a five speed. In my five speed I've run Amsoil series 2000 for about 4 years. I've towed in 98 degree weather and have never gotten over 200 *. Course I run Amsoil all the way through. When I got to 200 I just dropped the speed a little and down it came. I do change it every year as I do in the rear and front diff., transfer case and the overdrive unit. It's time now.<br><br>..Preston..

 

Sorry it is an automatic

 

I run Amsoil ATF4 in mine. The temps are lower in all conditions with it. ;D I would go all synthetic.<br>Dan

 

Using synthetic is really a personal choice, With the new oils on the market they all are much better than past history. Synthetics work very well under extreme heat or cold. The oils used in the manual transmission should be synthetic in most cases. The auto's have so much better oil like the ATF+4 now which has very good life and flash point quality's how ever you cant go wrong with any of your choices if the oils are serviced regularly. <br><br>Don

 

Anybody used Mobil 1 ATF? I can get it for free &amp; am planning a change soon.

 

What's the ballpark cost for a good synthetic for an auto?

 

I bought some Amsoil Universal ATF at a NAPA store for $8.99 per quart.<br><br>I've seen Mobil 1 ATF at Autozone for $4.99 per quart. I don't know if it meets Chrysler ATF+4 spec, though.

 

[quote author=Ruralmedic link=board=7;threadid=14521;start=0#136926 date=1052631675]I don't know if it meets Chrysler ATF+4 spec, though.[/quote]<br><br>There is no mention of the ATF+4 spec on the Mobile web site, but it clearly states that Mobile Synthetic ATF does NOT met the ATF+3 spec.

 

Only tranny fluid that I have seen that actually says it meets the chrysler ATF+ specs is Amsoil. I just ordered 5 gallons. ;D<br><br><br>Tony

 

Amsoil is said to be +4 but we must remember it is not DC approved as is none of the others that I know of. You will only need syn. in extreme cold or hot applications from the research I have done.<br>Bruce

 

I also run Amsoil and love it. You can become a perferred customer and save some money on your Amsoil.<br><br>KC

 

It has been said &quot;it is not DC approved&quot;. True but then Harley-Davidson say the only synthetic oil &quot;approved&quot; for their bikes is their own &quot;screaming eagle&quot; synthetic. Does that mean any other will grenade the bikes? I dought it. <br><br> Everybody wants to sell their own stuff.<br><br>..Preston..