# Dodge Ram 1500 Transmission fluid dissapears - cannot find a leak **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** magnum, dodge\ **Created:** [January 19, 2014, 3:01am UTC](https://community.cartalk.com/t/dodge-ram-1500-transmission-fluid-dissapears-cannot-find-a-leak/83228 "2014-01-19T03:01:25Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Leewhiteside](https://avatars.discourse-cdn.com/v4/letter/l/a8b319/32.png) [@Leewhiteside](https://community.cartalk.com/u/Leewhiteside)\ **Post date:** [January 19, 2014, 3:01am UTC](https://community.cartalk.com/t/dodge-ram-1500-transmission-fluid-dissapears-cannot-find-a-leak/83228/1 "2014-01-19T03:01:25Z")
I have a 1998 Dodge Ram 1500. The transmission fluid is always low, but I cannot find a leak. This causes the transmission to slip. When I add transmission fluid it is okay for a while. (I do not drive the truck daily…) Any ideas on what the problem may be? ---
**Author:** ![Docnick](https://avatars.discourse-cdn.com/v4/letter/d/ecae2f/32.png) [@Docnick](https://community.cartalk.com/u/Docnick)\ **Post date:** [January 19, 2014, 3:13am UTC](https://community.cartalk.com/t/dodge-ram-1500-transmission-fluid-dissapears-cannot-find-a-leak/83228/2 "2014-01-19T03:13:28Z")
When you are driving down the road you may be losing fluid through a small leak. You can’t, of course, observe that. Have the car put on a hoist and run the engine and trnasmission. There might be a small seepage. Just because there is no puddle on your garage floor does not meant you don’t have a leak. ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [January 19, 2014, 3:19am UTC](https://community.cartalk.com/t/dodge-ram-1500-transmission-fluid-dissapears-cannot-find-a-leak/83228/3 "2014-01-19T03:19:15Z")
Have you checked the coolant to make sure it’s not contaminated with transmission fluid? Tester ---
**Author:** ![BustedKnuckles](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bustedknuckles/32/25_2.png) [@BustedKnuckles](https://community.cartalk.com/u/BustedKnuckles)\ **Post date:** [January 19, 2014, 6:17am UTC](https://community.cartalk.com/t/dodge-ram-1500-transmission-fluid-dissapears-cannot-find-a-leak/83228/4 "2014-01-19T06:17:22Z")
IIRC, a lot of Mopar transmissions send pressurized fluid through the trans cooler only when the gear shift is on gear, not in Park or Neutral. Under these conditions, a leak may not drip at idle in the driveway, but only on the drive. ---
**Author:** ![knfenimore](https://avatars.discourse-cdn.com/v4/letter/k/9fc348/32.png) [@knfenimore](https://community.cartalk.com/u/knfenimore)\ **Post date:** [January 20, 2014, 12:24am UTC](https://community.cartalk.com/t/dodge-ram-1500-transmission-fluid-dissapears-cannot-find-a-leak/83228/5 "2014-01-20T00:24:03Z")
My Dodge Intrepid leaked at the torque converter seal and burnt on the exhaust, but only when I was driving. When I stopped nothing. ---
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [January 20, 2014, 5:46am UTC](https://community.cartalk.com/t/dodge-ram-1500-transmission-fluid-dissapears-cannot-find-a-leak/83228/6 "2014-01-20T05:46:30Z")
Seconding @Tester 's comment, first thing is to make sure it isn’t leaking into the radiator. The transmission fluid flows through the radiator in a closed tube to cool it in most vehicles with automatics, and if that tube springs a leak inside the radiator the transmission fluid will leak into the radiator and mix with the engine coolant. If enough leaks it could damage the engine, so it is important to know if this is happening asap. ---
**Author:** ![oldtimer-11](https://avatars.discourse-cdn.com/v4/letter/o/e79b87/32.png) [@oldtimer-11](https://community.cartalk.com/u/oldtimer-11)\ **Post date:** [January 20, 2014, 11:29am UTC](https://community.cartalk.com/t/dodge-ram-1500-transmission-fluid-dissapears-cannot-find-a-leak/83228/7 "2014-01-20T11:29:12Z")
I believe that if this is a 4x4 there is a vacuum line to the transfer case. What I don’t know is if the transfer case and the transmission share fluid.