# Diesel Truck recommendations **URL:** \ **Category:** General Discussion\ **Tags:** gmc, 2500\ **Created:** [December 25, 2017, 1:56pm UTC](https://community.cartalk.com/t/diesel-truck-recommendations/110626 "2017-12-25T13:56:47Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![badbearing](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/badbearing/32/10683_2.png) [@badbearing](https://community.cartalk.com/u/badbearing)\ **Post date:** [December 25, 2017, 1:56pm UTC](https://community.cartalk.com/t/diesel-truck-recommendations/110626/1 "2017-12-25T13:56:48Z")
Automatic transmission warm up in Park or Neutral? ---
**Author:** ![VOLVO-V70](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@VOLVO-V70](https://community.cartalk.com/u/VOLVO-V70)\ **Post date:** [December 25, 2017, 2:34pm UTC](https://community.cartalk.com/t/diesel-truck-recommendations/110626/2 "2017-12-25T14:34:53Z")
No difference , just start vehicle wait a few seconds then drive off. ---
**Author:** ![badbearing](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/badbearing/32/10683_2.png) [@badbearing](https://community.cartalk.com/u/badbearing)\ **Post date:** [December 25, 2017, 2:45pm UTC](https://community.cartalk.com/t/diesel-truck-recommendations/110626/3 "2017-12-25T14:45:27Z")
Seconds? The fluid? Nothing warms in the transmission if it sits and idles at -20? I once took off cold, in the winter, hammered on it and blew tranny fluid on the ground. I don’t remember if it was a line or seal. I do remember my ‘friend’ from school charged me $1000 to fix it ---
**Author:** ![jtsanders](https://avatars.discourse-cdn.com/v4/letter/j/c2a13f/32.png) [@jtsanders](https://community.cartalk.com/u/jtsanders)\ **Post date:** [December 25, 2017, 3:13pm UTC](https://community.cartalk.com/t/diesel-truck-recommendations/110626/4 "2017-12-25T15:13:55Z")
Drive gently until it warms up. ---
**Author:** ![CROSSBOLT](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/crossbolt/32/9780_2.png) [@CROSSBOLT](https://community.cartalk.com/u/CROSSBOLT)\ **Post date:** [December 25, 2017, 4:09pm UTC](https://community.cartalk.com/t/diesel-truck-recommendations/110626/5 "2017-12-25T16:09:43Z")
Auto transmissions are crabby about oil that is too hot but within reason, are very happy with cold oil. Big diesels are idled for quite a while to let air pressure build. You can take off reasonably once engine oil pressure shows. Don’t worry about the trans. Auto trans that self-destruct in either cold or hot weather usually have had no maintenance since they were built. Karl ---
**Author:** ![dagosa](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/dagosa/32/9837_2.png) [@dagosa](https://community.cartalk.com/u/dagosa)\ **Post date:** [December 30, 2017, 1:14am UTC](https://community.cartalk.com/t/diesel-truck-recommendations/110626/6 "2017-12-30T01:14:36Z")
Agree. The diesels run much better and cleaner with a little more idle time then gasoline engines. The colder it is, the longer it takes. I would baby a truck more with its separate diffs then fwd cars. The trans axle, transmission and engine are all in one unit and warmup quickly in fwd cars. A truck, IMO, should be driven a little slower, a little longer at low speeds. ---
**Author:** ![jtsanders](https://avatars.discourse-cdn.com/v4/letter/j/c2a13f/32.png) [@jtsanders](https://community.cartalk.com/u/jtsanders)\ **Post date:** [December 30, 2017, 12:58pm UTC](https://community.cartalk.com/t/diesel-truck-recommendations/110626/7 "2017-12-30T12:58:30Z")
@dagosa, nice to see you posting again. Welcome back. ---
**Author:** ![dagosa](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/dagosa/32/9837_2.png) [@dagosa](https://community.cartalk.com/u/dagosa)\ **Post date:** [December 30, 2017, 7:07pm UTC](https://community.cartalk.com/t/diesel-truck-recommendations/110626/8 "2017-12-30T19:07:49Z")
Thanks JT. 😉