scubatech

According to AllPar, Mopars own performance site you should always use 5 W 20 for VVT engines unless otherwise specified. According to these engineers the lifters need this specific grade of oil to live a long life and perform as designed. I doubt any gains would be noticed. % W 20 oil is pretty light wieght and flows really well when cold and can live with high oil temps in synthetic form.

rob_engineer

Yep, but my 2012 pentastar specifies 5w-30

Grimmjpr

Don't you mean 5W-30?

My 2012 calls for 5W-30.......which is funny cause all the 13-14's call for 5W-20 and my GFs 2013 Avenger R/T calls for 5W-20 as well......

Chefbrujo

ya thats what i was trying to say. However what another person mentions about thenlighter weight drainin more thoroughly seems to logically make sense too. Hmmm which one is better for stabing of. long term start up wear.

rob_engineer

Yep, sorry. 5w-30 for the 2012. (Typing on iPhone in dark room.)

Jiblet

The oil will hardly all drain off. Just doesn't happen.

Even if it did, that's where the additive packs come into play. They lay down protective layers for instances of boundary lubrication.

Anyway, people shouldn't make many sweeping generalizations or comparisons between grades of oil without specifying brand/type.
Not all 0w, 5w, 20, 30s are the same. You have to look at all various parameters. And that requires trusting the companies to keep the PDS up date (and accurate).

Check out pqia for example

http://www.pqiamerica.com/Feb2014/co...ed5w20ALL.html

Jeepstin12

interesting. My cap and manual states 5w-30...

rob_engineer

Please see that I corrected myself. My 2012 specifies 5-30.

Jeepstin12

I saw that afterwards. No worries. I thought perhaps jeep had some discrepancies and was wondering if maybe they changed midway through 2012.

5150cliff

This comment is absolutely correct. The lower the number, '0' in this case, the better the start up protection. The temperature has no bearing on it. So, running 0-20 or 0-30 is fine. All those who say that they run a 10 weight or even a 20 weight oil because the air temperature in their neck of the woods is over a certain degree are totally misinformed.