Now topping the list of ridiculous things that I've heard from the Chrysler service department: Since Chrysler doesn't recommend the use of synthetic oil with the 5.7l engine, if you have an engine malfunction while using it they will void your warranty.
Silly me! I figured that I would be in the clear as long as I chose a motor oil that complied with MS-6395. I guess I'm just lucky that the synthetic Royal Purple oil I've been using hasn't caused my JGC to blow up yet.
I wonder, has Chrysler offered a verdict on the after-market air in my tires yet?
Don't ever go back to that uneducated service advisor. From page 601 of the 2015 Grand Cherokee owner's manual (page may vary on prior year manuals):
Synthetic Engine Oils
You may use synthetic engine oils provided the recommended oil quality requirements are met, and the recommended maintenance intervals for oil and filter changes are followed.
I properly will switch over to Synthetic Oil on my next change. My service dealer of course will charge me extra. With the aftermarket air, my dealer is waiting for more nitro capsules to come in.
It seams that I hear a lot of complaints about the Long Island centers. So far, the only one I heard any good things about is East Hills.
I've also heard good things about East Hills. I take my JGC to the Bayside dealership and I like them a lot overall. They've always been courteous, prompt, and professional. This is the first questionable thing I've heard from them. It probably reflects more on the individual who said it than it does the service department.
Now topping the list of ridiculous things that I've heard from the Chrysler service department: Since Chrysler doesn't recommend the use of synthetic oil with the 5.7l engine, if you have an engine malfunction while using it they will void your warranty.
Silly me! I figured that I would be in the clear as long as I chose a motor oil that complied with MS-6395. I guess I'm just lucky that the synthetic Royal Purple oil I've been using hasn't caused my JGC to blow up yet.
I wonder, has Chrysler offered a verdict on the after-market air in my tires yet?
I'm of the school that it's best to "break-in" a new engine with conventional oil (non-synthetic)...which is what your new Grand Cherokee comes with, then after 5,000 miles, perform your first oil/filter change...making the switch over to full synthetic oil...and every 5,000 miles after going forward.
I also like to save money, so I buy the least expensive synthetic oil I can (Mobil 1), and I purchase Mopar oil filters online...performing the oil change myself of course. Could I go longer than 5,000 miles per oil change using synthetic...sure...I could spend even MORE money having the oil analyzed to determine a more exact oil change interval, but why bother? NO brand of synthetic oil will breakdown completely in our Grand Cherokees within 6 months/5,000 miles...even if you tow a lot, so spending more money on other expensive brands of oil is a waste IMO...especially on a daily commuter vehicle.
Mobil 1, 5w20 - 6 qts about $36 (5 qt container at Walmart for less than $27)
Mopar 3.6L oil filter - about $9 each on eBay...including shipping
I mean I'm used to going 10k per oil change without any issues on my bmw and the computer says 15k intervals.... But this one I'm not sure. I will definitely switch to full synthetic for my first change just don't know if 1k miles is enough of a break in to switch over to synthetic from the original oil.
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