5W-40 on Liberty KK 3.7 - JeepForum.com

 
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post #1 of 7 Old 04-19-2010, 11:44 AM Thread Starter
nkanakakis
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Location: Greece
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5W-40 on Liberty KK 3.7

I have just changed oil on my Jeep Liberty KK 3.7 and the garage guy told me that he used 5W-40 instead of 5W-20 or 5W-30 that the user manual recommends
Is that ok or I need to go back and ask him to change the oil again
Please help

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post #2 of 7 Old 04-19-2010, 01:03 PM
tjkj2002
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Use only 5w20 or 5w30,have them change it to the correct oil now on there dime.5w40 is only for the CRD's.

'02 Liberty sitting on 35" tires,HP44,RockJock60,and AtlasII t-case
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post #3 of 7 Old 04-19-2010, 01:11 PM Thread Starter
nkanakakis
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It far away from where I live
Do you suggest keep this oil for 2000-3000 miles or change it immediately?
I
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post #4 of 7 Old 04-19-2010, 06:28 PM
08KKJeepGrn
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Quote:
Originally Posted by nkanakakis View Post
It far away from where I live
Do you suggest keep this oil for 2000-3000 miles or change it immediately?
I
Ahhh, I think I hear the tow truck coming!!!! Get back there and have them change the oil!!!! the owners booklet says use ONLY 5w20 or 5w30... WTF.

08 Liberty Limited Jeep® Green
'15 Jeep Wrangler Unlimited Silver
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post #5 of 7 Old 04-20-2010, 04:28 PM
coder
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Usually 5w40 is for diesel engines only, it is to thick and has the wrong additives in it for a gasoline engine. If it was my KK I would replace it as soon as possible just to be safe.
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post #6 of 7 Old 05-21-2010, 07:29 AM Thread Starter
nkanakakis
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Finally I went to another dealer and changed oil to 5W-30 (This is the recommended viscosity for Greece) Thanks to all for your help
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post #7 of 7 Old 11-02-2010, 01:35 PM
SuperRliBerty
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Quote:
Originally Posted by nkanakakis View Post
It far away from where I live
Do you suggest keep this oil for 2000-3000 miles or change it immediately?
I
I replace my oil every 2000 miles. Pennzoil 5w-20 and a puralator gold filter.
Oil turns dark after 1500 miles but not black or sludgy

2008 Sport Liberty
Cold air intake*Trush (magnaflow) turbo muffler* Hypertech power program*
Hood Prop mod. Battery Quick Release mod.
Resonator removed (sounds like a V8 on start up)
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