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View Full Version : Oil...What to run in an 80 in my situation?


corsair23
07-18-2007, 02:55 PM
Ok...So I've been running Mobil 1 0W40 in the LX and LC. Due to the extended warranty requirements on the LX I have to maintain a 3mo/3000 mile oil change interval which I probably would anyway.

I had this interaction on MUD with Cary in the recent "filter size" thread:

Quote:
Originally Posted by corsair23 http://images.ih8mud.com/images/buttons/viewpost.gif (http://forum.ih8mud.com/showthread.php?p=2349690#post2349690)
Cary,

I'm using Mobil 1 0W40 as recommended to me. Last change was maybe 2500 miles ago and done just before CM07 so less than 3 months ago. Will be changing the oil in the next few weeks despite many stating with synthetics you can go longer. My aftermarket warranty requires that I follow the 3 month/3000 mile rule so no biggie.

What is wierd is that I've owned the rig since last November and have never heard it make this noise before. First time I heard it was about 10 days ago on startup at a house up in Grand Lake CO (~8500') while on vacation. Seems wierd that I'm hearing it now http://images.ih8mud.com/images/smilies/confused.gif

I'm guessing it is something else besides startup rattle. Given your intervals, I would suggest you consider going to the Rotella or Chevron Delo 15w-40 summer, and 5w-30 in the winter. There is no point running a synthetic for the short intervals, you are just spending unnecessary money.

The "noise" issue aside, would you other 80 series owners run something else than Mobil 1 0W40 due to the shorter oil change intervals? Honestly I always have a hard time meeting the 3mo/3000 mile interval on mileage. Typically I don't reach 3000 miles until 4-5 months because I have such a short commute each day (10 miles RT).

If the answer is yes what would you run or would you go with what Cary states to use (as I understand it he is the MUD oil "expert").

TIA :thumb:

Hulk
07-18-2007, 03:04 PM
If I was driving less than 3000 miles every three months, but forced to change my oil every three months to maintain a warranty, I'd use some nice dino oil. Synthetic oil is nice, but 4 oil changes/year with <12,000 miles doesn't warrant the expense, IMO.

Hants
07-18-2007, 03:49 PM
Ditto...

Of course, I don't have a warranty of any sort... so I use Mobile 1. :hill:

Corbet
07-18-2007, 04:11 PM
Per the MUD FAQ section: Shell Rotella T 5w-40 Synthetic

Its $13 ish per gallon at wal-mart.

Red_Chili
07-18-2007, 05:32 PM
I have to ask- why are you guys running 0W? It's not spec'd is it?

Romer
07-18-2007, 06:00 PM
Per the MUD FAQ section: Shell Rotella T 5w-40 Synthetic

Its $13 ish per gallon at wal-mart.


Thats what I would do.

Romer
07-18-2007, 06:04 PM
I have to ask- why are you guys running 0W? It's not spec'd is it?


Bill,
I am not smart enough to answer your questions. I put together an FAQ on Mud with the help of the "80 section" oil experts.

http://forum.ih8mud.com/showthread.php?t=79305

What it says is it runs like 0W at -30 deg, but you can read it for your reference.