Originally Posted by dr.lee.baugh
It is indeed true, that most vehicles fall under the Schedule 'B' maintenance.
If you look at the requirements, they pretty much have all situations covered:
1) Do you drive in the cold (below freezing)?
2) Do you drive in the heat (above 90)?
3) Do you drive in traffic (stop and go)?
4) Do you drive on the highway a lot?
5) Do you take short trips?
6) Do you tow?
We live about 30 miles northwest of Atlanta, so the temp only drops below freezing occasionally during the heart of winter. But it has been over 90 degrees at least 15 out of the last 20 days here (by a few degrees).
My sister commutes about 16 miles round-trip daily to work on the interstate and does very little stop-and-go. Her trips are usually 8-10 miles one way, not sure if they consider that a short trip for this purpose? And the vehicle is not used for towing.
After reading the specifics of what qualifies a vehicle for the Schedule B maintenance, what would actually qualify for the simpler Schedule A?
If running synthetic, you can easily get 5,000 miles between oil changes...just make sure you use a quality oil filter to keep the oil clean. I don't know much about synthetic blends, as I don't really see the advantage of them. They cost more than conventional, but don't offer the same level of protection as a full synthetic. Since it gets very cold here in the winter, I run synthetic for the lower pour point. Really though, I am sure all three provide adequate protection if you are in a light duty situation and change at the intervals you are suggesting.
I'm going with full synthetic for this car going forward. I haven't decided on a change interval, but I'll definitely start at the 5-6k range and possibly extend it later on. I use Full Synthetic in my Mazda CX-9, but I also run it for the factory recommended 7,500 miles between changes. I also use K&N Oil filters (and air filters) on my CX-9. Are there any brands that are superior to the K&N for the Jeep or should I just use the K&N on the Jeep also?
I would do the coolant if it hasn't been done yet, as it is best to replace every 5 years or 100,000 miles.
Don't forget about the rear differential. I'm not sure about the 2WD, but my guess is that it should be done every 15k or 30k miles.
I have reviewed some but not all of the maintenance receipts from the dealership.
The dealer performed a fairly extensive 60k mile service about two years ago. It included new spark plugs, new PCV valve, changing axle fluid, changing some type of belt (drive belt of some kind) and a coolant flush and change. That includes everything on the Schedule B 60k Mile Service EXCEPT changing the transmission fluid!?
The vehicle currently has about 79,400 miles on it and the next oil change (according to the sticker on the windshield) isn’t due until 81,900. Once the transmission is serviced, it looks like there’s nothing other than oil changes until 90k.
If changing the transmission fluid at every 30,000 miles gives you piece of mind, then by all means go for it. 60,000 would certainly be adequate. A thing to keep in mind, your 3.7 may have the capped transmission dipstick tube. You'll want to do something about that if you are changing your own fluid!
I am having the transmission fluid changed next Tuesday. My mechanic is a buddy that I grew up with and he’s honest to a fault and hardly charges me for any labor. I always try to throw an extra $20 or so his way even for oil changes because he doesn’t charge me for his time.
What is the BEST transmission fluid to use in the W5A580? The manual specifies Mopar ATF+4 Automatic Transmission Fluid. I use Royal Purple Synthetic ATF in my CX-9 (which has an Aisin 6-speed A/T) and it appears that they also have a product that works in place of the Mopar ATF+4. I’ve had great results from Royal Purple products for the last 10 years, but is there another brand of synthetic that you would recommend instead? Of all fluids, I know that ATF is the one that has to be perfectly compatible or it can kill the transmission. I’m probably being overly cautious with the ATF changes, but I have mine changed every 30k and will do the same for the Jeep. I had never owned a vehicle with an automatic transmission until I was 37, which is when I bought my 2012 Mazda CX-9. For the 22 years prior to that, I only had manuals and they required very little in the way of maintenance and were forgiving if even if I failed to do anything.
BTW, no more warning lights have appeared on the instrument panel, which is a good thing! I told my sister to quit buying gas at a dozen different places and go to one of the Chevron stations in our hometown that are owned by a family friend. It may not be a big deal, but I am rather OCD and I like to purchase a high quality product and use it consistently as long as it performs as expected.
I really appreciate you taking the time to respond with such detail to my posting! You have been very helpful and I am grateful! =)