# 2000 Jeep Cherokee motor oil suggestions **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** cherokee, jeep\ **Created:** [June 9, 2018, 6:07pm UTC](https://community.cartalk.com/t/2000-jeep-cherokee-motor-oil-suggestions/118941 "2018-06-09T18:07:53Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![SteveChike](https://avatars.discourse-cdn.com/v4/letter/s/eada6e/32.png) [@SteveChike](https://community.cartalk.com/u/SteveChike)\ **Post date:** [June 9, 2018, 6:07pm UTC](https://community.cartalk.com/t/2000-jeep-cherokee-motor-oil-suggestions/118941/1 "2018-06-09T18:07:53Z")
What motor oil should I use. It has a flat tappet cam that I just replaced because of a wiped lobe. I here todays oil has less zinc then it used to. Any sudjestions? ---
**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:** [June 9, 2018, 6:37pm UTC](https://community.cartalk.com/t/2000-jeep-cherokee-motor-oil-suggestions/118941/2 "2018-06-09T18:37:23Z")
> **[Engine Break In Oil](http://www.agkits.com/lucas-breakin-oil-sae30-5-quarts.aspx?msclkid=344e3243e9e01548960c695ff7d4afcc&utm_source=bing&utm_medium=cpc&utm_campaign=(ROI)%20Shopping&utm_term=4583657818767825&utm_content=All%20Products#.WxwePLPuTkc)** > > Lucas Break-In Oil helps seal new rings while providing excellent extreme pressure properties that protect the entire valve train and camshaft. Especially designed for flat tappet camshafts, but can be used wherever you need the extra wear... Tester ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [June 9, 2018, 7:00pm UTC](https://community.cartalk.com/t/2000-jeep-cherokee-motor-oil-suggestions/118941/3 "2018-06-09T19:00:38Z")
I’m surprised a 2000 has a problem with modern oils. Was the failed cam a stock one? ---
**Author:** ![SteveChike](https://avatars.discourse-cdn.com/v4/letter/s/eada6e/32.png) [@SteveChike](https://community.cartalk.com/u/SteveChike)\ **Post date:** [June 9, 2018, 7:03pm UTC](https://community.cartalk.com/t/2000-jeep-cherokee-motor-oil-suggestions/118941/4 "2018-06-09T19:03:27Z")
It was the stock cam. ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [June 9, 2018, 7:05pm UTC](https://community.cartalk.com/t/2000-jeep-cherokee-motor-oil-suggestions/118941/5 "2018-06-09T19:05:08Z")
Then in my opinion it was defective, or the oil wasn’t maintained correctly. No modern car should require special oil just to protect the cam. ---
**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:** [June 9, 2018, 7:21pm UTC](https://community.cartalk.com/t/2000-jeep-cherokee-motor-oil-suggestions/118941/6 "2018-06-09T19:21:59Z")
Did you run the engine @ 2000 RPM’s for at least 20 minutes to properly break-in the new camshaft? Tester ---
**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\ **Post date:** [June 9, 2018, 7:29pm UTC](https://community.cartalk.com/t/2000-jeep-cherokee-motor-oil-suggestions/118941/7 "2018-06-09T19:29:57Z")
I’m surprised it had flat tappets instead of rollers. ---
**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:** [June 9, 2018, 7:35pm UTC](https://community.cartalk.com/t/2000-jeep-cherokee-motor-oil-suggestions/118941/8 "2018-06-09T19:35:10Z")
> [@Purebred](#): > > I’m surprised it had flat tappets instead of rollers Why would Jeep install expensive roller lifters in their engines? Tester ---
**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\ **Post date:** [June 9, 2018, 7:37pm UTC](https://community.cartalk.com/t/2000-jeep-cherokee-motor-oil-suggestions/118941/9 "2018-06-09T19:37:34Z")
Same reason most cars have them now. As far as I know it is a variety of reasons, fuel economy, lower zinc in oils, longer engine life, and better overall performance. I may be wrong, but… ---
**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:** [June 9, 2018, 7:53pm UTC](https://community.cartalk.com/t/2000-jeep-cherokee-motor-oil-suggestions/118941/10 "2018-06-09T19:53:23Z")
Roller lifters are aftermarket components. Not stock in most engines > **[Performance Perspectives: On a Roll(er): Cams, Lifters & Rockers | MOTOR](https://www.motor.com/magazine-summary/performance-perspectives-on-a-roller-cams-lifters-rockers/)** > > When someone talks about his engine, or about an engine that he plans to build or buy, the term roller is sometimes bandied about, often with some level of vagueness. When used loosely, roller can refer to either the style of camshaft or to the... Tester ---
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [June 9, 2018, 8:02pm UTC](https://community.cartalk.com/t/2000-jeep-cherokee-motor-oil-suggestions/118941/11 "2018-06-09T20:02:14Z")
The Chrysler V-8 engines had roller lifters starting in 1985. The 4.0 L Jeep engine had flat tappets until the end of manufacturing in 2006. I suspect that old block design would require a redesign to be able to fit guides for roller lifters. ---
**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\ **Post date:** [June 9, 2018, 8:19pm UTC](https://community.cartalk.com/t/2000-jeep-cherokee-motor-oil-suggestions/118941/12 "2018-06-09T20:19:53Z")
Thank you, I was under the impression most pushrods engines had switched to rollers. ---
**Author:** ![SteveChike](https://avatars.discourse-cdn.com/v4/letter/s/eada6e/32.png) [@SteveChike](https://community.cartalk.com/u/SteveChike)\ **Post date:** [June 9, 2018, 11:13pm UTC](https://community.cartalk.com/t/2000-jeep-cherokee-motor-oil-suggestions/118941/13 "2018-06-09T23:13:57Z")
Yes. I also had a high zinc break in oil in it. new cam is fine. I’m just looking for the best oil for flat tappet cam so I don’t wipe out another cam. ---
**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:** [June 9, 2018, 11:23pm UTC](https://community.cartalk.com/t/2000-jeep-cherokee-motor-oil-suggestions/118941/14 "2018-06-09T23:23:25Z")
Then you’re good to go. Once the cam/lifters have broken in, use the oil specified on the oil cap. I think new cam/lifter break-in has to be the most nerve racking event to have to go thru. Tester ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [June 9, 2018, 11:49pm UTC](https://community.cartalk.com/t/2000-jeep-cherokee-motor-oil-suggestions/118941/15 "2018-06-09T23:49:09Z")
> [@Tester](#): > > Not stock in most engines Stock in GM pushrod V8’s since 1986. Stock in pushrod Ford engines since about '88 or so. My 2000 Honda S2000 had roller cam followers as did my 3 valve Ford 4.6 and my DOHC 5.0. I’d say most modern engines have roller followers now. ---
**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:** [June 10, 2018, 3:19am UTC](https://community.cartalk.com/t/2000-jeep-cherokee-motor-oil-suggestions/118941/16 "2018-06-10T03:19:25Z")
> **[Making the Most of Modern Flat Tappet Camshafts and Lifters - OnAllCylinders](https://www.onallcylinders.com/2017/09/22/making-modern-flat-tappet-camshafts-lifters/)** > > Camshafts and lifters are available in two basic formats—roller and flat tappet. And then within those two formats, they can either be of the mechanical (solid), or hydraulic variety. Fair … Tester, what was the date on the article you posted? This one claims no flat tappet cams on any car sold today. ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [June 10, 2018, 9:27pm UTC](https://community.cartalk.com/t/2000-jeep-cherokee-motor-oil-suggestions/118941/17 "2018-06-10T21:27:58Z")
> [@SteveChike](#): > > I’m just looking for the best oil for flat tappet cam so I don’t wipe out another cam Add a break-in additive to your oil on every oil change. For the life of the car, unfortunately. Modern oils are not formulated for flat tappet cams anymore. ![image](https://global.discourse-cdn.com/cartalk/original/2X/3/30a9b7e58c0d74287bb8701cd3b6e2d3e72ac927.jpg) ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [June 10, 2018, 10:07pm UTC](https://community.cartalk.com/t/2000-jeep-cherokee-motor-oil-suggestions/118941/18 "2018-06-10T22:07:08Z")
On a 2000 model car? ---
**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:** [June 10, 2018, 10:24pm UTC](https://community.cartalk.com/t/2000-jeep-cherokee-motor-oil-suggestions/118941/19 "2018-06-10T22:24:51Z")
You can’t use break-in oil all the time. The high phosphorous content will eventually damage the catalytic converter. Tester ---
**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:** [June 11, 2018, 2:24am UTC](https://community.cartalk.com/t/2000-jeep-cherokee-motor-oil-suggestions/118941/20 "2018-06-11T02:24:55Z")
The original cam lasted 9 years, are you planning on keeping this car 9 more years? If I was and it was my car I would use a 50/50 mix of 15W40 Mobile Delvac diesel oil and 5W20 of what ever brand you like. [Next page](https://community.cartalk.com/t/2000-jeep-cherokee-motor-oil-suggestions/118941.md?page=2)