LOL. "My engine feels more lively on 5/20 v 5/30"

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I wanted to put my inquiry to bed so I took @ 30 minutes today to call 3 local Jeep dealers...2 were REALLY sure about what's going on and another seemed lethargic about my questions; here's what I found out...

my dealer, Ladd-Hanford in Lebanon, PA stated that 2012 Lib's use 5w-20 and NO changes were issued by Chrysler; same thing for 2011 Lib's; they use bulk drum Pennzoil conventional or upgraded semi-syn or full syn if customers request; I asked what they used in my vehicle (free oil changes written into the sales contract) and they have used 5w-20 conventional...

another dealer, Brenner in Mechanicsburg, PA confirmed (using my VIN) there is NO change for 2011 Lib's and the 2012's also use 5w-20; they went further by stating a 'recall' would be issued for replacement oil filler caps if indeed a change was made, along with a TSB for dealer use (very, very informative); they also use bulk drum Pennzoil conventional...

another dealer, Freedom in Harrisburg, PA answered with a generic statement about OEM spec'd oil and when I clarified why I called I was transferred to parts for confirmation...the only certain thing they said was 5w-20 and it was 'bulk' and they 'thought' it was Mobil brand; guess that's better than nothing...

so I'm gonna buy a case of Valvoline NextGen 5w-20 on sale @ autozone (and I think they are also offering a rebate in the form of an autozone shopping card)
 
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Originally Posted By: WMSmotorhead
Just for kicks... even though I've been 5w-20ing for 4 years now, since I have a few cases of 5w-30, I'll throw some in next OCI just to see if there is anything other than superstition to all of this.


You seem to be a perfect candidate - with the same car and 5-20 for so long. But it comes down to the driver's perception, and the fact that it is an expecially hot summer.
 
Originally Posted By: Trav
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5w-20 calls for tighter tolerances --> higher production costs if your mfg equipment is not up to snuff.

Wait a minute you mean BMW, Mercedes are using shoddy out dated equipment. OMG i never thought of that.


bravo

then you hear people say it's the sustained speeds that they do that require it, but Ford must have the most advanced design dept on the planet since they spec 5W-20 for so many
 
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