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-   -   5W-40 on Liberty KK 3.7 (http://www.jeepforum.com/forum/f292/5w-40-liberty-kk-3-7-a-1015715/)

nkanakakis 04-19-2010 12:44 PM

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

tjkj2002 04-19-2010 02:03 PM

Use only 5w20 or 5w30,have them change it to the correct oil now on there dime.5w40 is only for the CRD's.

nkanakakis 04-19-2010 02:11 PM

It far away from where I live
Do you suggest keep this oil for 2000-3000 miles or change it immediately?
I

08KKJeepGrn 04-19-2010 07:28 PM

Quote:

Originally Posted by nkanakakis (Post 9311950)
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.

coder 04-20-2010 05:28 PM

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.

nkanakakis 05-21-2010 08:29 AM

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

SuperRliBerty 11-02-2010 02:35 PM

Quote:

Originally Posted by nkanakakis (Post 9311950)
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


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