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What oil for a 4.0 straight 6 for Jeep cherokee oil #674838 04/19/10 01:06 PM 04/19/10 01:06 PM
Joined: Jan 2003 Posts: 9,857 Cambridge Idaho RUMBLON OP master
RUMBLON OP master Joined: Jan 2003 Posts: 9,857 Cambridge Idaho	change. Im heading to Costco and have a 97 Jeep cherokee I recently purchased. what oil is best for this vehicle??? Im used to my diesels and have not bought decent oil in a while. Dave

Re: What oil for a 4.0 straight 6 for Jeep cherokee oil [Re: RUMBLON] #674839 04/19/10 02:50 PM 04/19/10 02:50 PM
Joined: Jan 2003 Posts: 6,531 Jacksonville, FL Chris2581 master
Chris2581 master Joined: Jan 2003 Posts: 6,531 Jacksonville, FL	I've been using Mobil Delvac 15w40 in my 99 4.0 and it has 137K with ZERO problems. Nautilus Racing- We use Superformance gaskets and Turbo Action converters/products.

Re: What oil for a 4.0 straight 6 for Jeep cherokee oil [Re: RUMBLON] #674840 04/19/10 09:10 PM 04/19/10 09:10 PM
Joined: Jan 2003 Posts: 2,836 Detroit boy in Saugerties, NY BrianShaughnessy master
BrianShaughnessy master Joined: Jan 2003 Posts: 2,836 Detroit boy in Saugerties, NY	I run 5 quart + jug of whatever brand 10w40, a large ph8a size filter and 1 quart of mobil1 10w40 high mileage formula. (4.0 takes 6 quarts with regular filter... large filter will fit on my 2000.... not sure on other years. ). Black Betty: '69 Charger RT: 440 6 pack, TKO600 5 speed, 3.73 Dana. Sinnamon: '69 Charger RT: 440, 727, 4.30 8.75. High School Sweetheart. El Grande: '98 Grand Cherokee 5.9 Limited.

Re: What oil for a 4.0 straight 6 for Jeep cherokee oil [Re: BrianShaughnessy] #674841 04/19/10 09:38 PM 04/19/10 09:38 PM
Joined: Jan 2003 Posts: 21,459 Eagle, Idaho Neil The Doctor is in.
Neil The Doctor is in. Joined: Jan 2003 Posts: 21,459 Eagle, Idaho	My dad used to have one and always ran chevron oil with no problems.

Re: What oil for a 4.0 straight 6 for Jeep cherokee oil [Re: Neil] #674842 04/20/10 06:24 AM 04/20/10 06:24 AM
Joined: Feb 2006 Posts: 969 OH--IO 3 360904 super stock
360904 super stock 3 Joined: Feb 2006 Posts: 969 OH--IO	My everyday driver is a 94 jeep cherokee sport 4.0 bought this new. Now has 210000 miles, never been touched with valvoline 10w40 summer, 10w30 winter.

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