|07-14-2013 03:50 PM|
Example: you start out with a 5w30 conventional oil and after about 2000 miles, you wined up with 5w20. It depends on the oil as too how fast it will shear down "reduce itself to a lesser weight". After talking directly to Shell oil, my understanding from them is that all oils will shear down in time, but that the Synthetics are much more stable. So in answering your question, synthetic oils are pretty much shear-stable!
|07-14-2013 12:04 PM|
I don't run amsoil in my street rig its just too darn expensive to change every 3k.
I have a friend who builds competition rock crawlers and he swears by it. The did an experiment where they ran 2 buggies upside down and the one with amsoil in it made it 5 min longer than Mobile 1. Its good stuff. I couldn't afford it because my 08 burned as much oil as it did gas. My new '12 seems to be better but I have the premium maintenance plan that includes oil changes for 4 years. Cant pass that up.
|07-14-2013 11:39 AM|
|TEXN_1||What the heck is shear-stable oil?|
|07-14-2013 10:25 AM|
|07-14-2013 08:47 AM|
|legitposter||Stick with the recommendation for your year, regardless of climate. Remember, the engine oil is like blood, its the absolute core of your engine. If you mess with it then Chrysler will be able to blame any engine-related problem on you and void your warranty.|
|07-14-2013 08:01 AM|
|07-13-2013 10:33 PM|
|oOoYTSEJAMoOo||Side question about synthetic....can I switch to synthetic after I have gotten my normal oil changes from the dealer? What's the benefit?|
|07-13-2013 07:23 PM|
|HillbillyJeeper||Amsoil... there is no substitute. 5w30. Now..... LETS GET IT ON!!!|
|07-13-2013 07:17 PM|
|jadmt||In an perfect world you would use 5-30 but have receipts that reflect 5-20 so not to risk a warranty issue and it is a fact being this is a Chrysler product that you will have to use your warranty so best not give them a reason to deny a claim.|
|07-13-2013 07:12 PM|
|wassup8687||Make sure the oil you choose meets the Chrysler specs and make sure to keep your receipts.|
|07-13-2013 05:54 PM|
|07-13-2013 04:51 PM|
|mcgee10||Maybe we can beat this oil post to death like most of the others. My Jeep dealer uses Mobil 1 10w-30 unless you ask for something else. There is nothing you can do to your jeep my dealer will not fix under warranty. I have seen him replace drive shafts even knowing the guy went to high with his lift and destroyed the drive shaft.|
|07-13-2013 04:44 PM|
The main goal of 5W20 is fuel economy..even the manufacturers will admit to this. M1 actually had the chrysler spec- they had a spat, and M1 stopped carrying the spec on the bottles. The oil is still exactly the same.
Here is a tidbit- Jeep specifically warned European Compass and Patriot owners to not use 5W20 after doing the initial drain. It simply was not providing the protection needed in some engines.
So basically 5W30 provides slightly better protection and 5W20 provides slightly better fuel economy. Use what you want. I have only see two shear-stable 5W20s, and I don't plan on using any.
Using 5W20 will not void your warranty...it is the same engine that called for 5W30 a year ago before they needed some help for the CAFE fuel economy requirements. Toyota did the same thing. Their led techs also (I also know the Lexus Svc Mgr) said it is for fuel economy and recommended I stick with 5W30 in my V8 4Runner. Call Chrysler and ask them (a monkey rep will tell you to use what is on the cap...try to get to someone above that) but do use 5W20 if you're worried.
|07-13-2013 04:32 PM|
5w-20 synthetic works perfectly.
Trying to outsmart auto and petroleum engineers is pointless.
|07-13-2013 03:07 PM|
Synthetics maybe used. Mobile 1 is not recommended by Chrysler/Jeep!
|07-13-2013 03:02 PM|
|gunut||I use any full syn 5w30 that's on sale.....penz, QS, Mobil 1,Valv, ect|
|07-13-2013 02:58 PM|
I don't really know that much about oils etc but I wouldn't think a special oil would need to be used in hot temperatures. When running its going to be around 160 degrees from what I've read anyway. Unless your in some extreme heat I don't think your engine will be running any more hot than usual.
I would see needing to change something for extreme cold because of starting the engine while its cold.
Just my 2 cents
|07-13-2013 02:48 PM|
|07-13-2013 01:28 PM|
|HK_Runner||No need. If you are under warranty, do call the dealership and make sure this is ok. There has been no change to the motor but dealerships will use any excuse to get out of a fix. The 5W20 was chosen to increase fuel economy and raise their average across the Chrysler line. If they say you must use 5W20, just use a very shear-stable one. I would use a Pennzoil synthetic. They also meet Chrysler spec (more of a formality). In fact, the Jeep dealership usually carries a semi-syn Pennzoil that is impossible to find anywhere else. It is a very good oil.|
|07-13-2013 01:23 PM|
|shanersrvn||Okay thanks. I have 3100 miles on jeep. Should I be waiting for an oil change light to come on before changing?|
|07-13-2013 01:09 PM|
|HK_Runner||5W30. Pick a good shear-stable one. Pennzoil makes the yellow bottle, Platinum, and Ultra. Great oils. Valvoline is good too, as is Mobil 1.|
|07-13-2013 01:05 PM|
What is best oil weight for 3.6 in 100 degree temp?
2013 Rubicon. What is best oil weight to use in Houston with 100 degree temps? Book says 5w20 as only choice.