Synthetic Oil
#11
JK Enthusiast
Join Date: Jan 2007
Location: Down East Maine
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I started using synthetic at 10k miles, because I plan to keep this vehicle for the long haul. I still get it changed every 3-6k miles, though.
The official dealership response I got in regards to synthetic oil is that it's no problem with them if you use synthetic oil at all, HOWEVER your warranty requirement that you keep up with the maintenance schedule does not change.
Likewise, if you change your own oil they HIGHLY recommend that you keep receipts for the oil you buy and mark the mileage you had at each change.
I don't know how aggressive they are with denying warranty work due to oil change history (or lack thereof), but it would suck to lose out on a repair being covered because you were going 8-10k miles between changes on synthetic vs. 3-6k on dino.
Note that this ceases to be a issue at 36k miles (or 100k if you extended the warranty), and I don't know what the requirements are for the lifetime powertrain warranty.
The official dealership response I got in regards to synthetic oil is that it's no problem with them if you use synthetic oil at all, HOWEVER your warranty requirement that you keep up with the maintenance schedule does not change.
Likewise, if you change your own oil they HIGHLY recommend that you keep receipts for the oil you buy and mark the mileage you had at each change.
I don't know how aggressive they are with denying warranty work due to oil change history (or lack thereof), but it would suck to lose out on a repair being covered because you were going 8-10k miles between changes on synthetic vs. 3-6k on dino.
Note that this ceases to be a issue at 36k miles (or 100k if you extended the warranty), and I don't know what the requirements are for the lifetime powertrain warranty.
#14
JK Enthusiast
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Join Date: Sep 2007
Location: Nevada
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Engine Oil
Just Did the Engine Oil At the Dealer With Mobil 1 Full Synthetic. Much Better now. 5W-20 at 64 miles.
Last edited by desert08; 02-16-2008 at 04:12 PM.
#15
#16
I thought you weren't supposed to switch to synthetic oil until the motor is broke in and the rings are seated? I don't know where I heard this, mabye somebody was lying to me. I figured 3k was a good time to switch.
#17
JK Enthusiast
Join Date: Jan 2007
Location: Mt Pleasant, PA
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I waited until my second oil change at 6K just to make sure everything was broke in properly.
You will find not everyone will agree on this, so its up to you to decide.
You will find not everyone will agree on this, so its up to you to decide.