First oil change indicator mileage. - Page 3 - Jeep Renegade Forum
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post #21 of 38 (permalink) Old 03-04-2016, 12:06 AM
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Originally Posted by LilRedRenny View Post
Brought mine into my dealer at 5k and they told me I didn't have to get it done until I was nearing 10k. I had them make note of it, they said the new vehicles coming out running full synthetic can go 10k and be fine between changes.
Yikes! This is why I look for other inputs because in the manual I just read this "NOTE: Under no circumstances should oil change intervals exceed 10,000 miles (16,000 km) or one year, whichever comes first.

Severe Duty All Models

Change Engine Oil at 4,000 miles (6,500 km) if the vehicle
is operated in a dusty and off road environment"

I would never wait that late to get an oil change, around, near or passed 10k. I do not live in a dusty or dirty area either so 4k is too soon.
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post #22 of 38 (permalink) Old 03-04-2016, 12:44 AM
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They have an internal sensor that should tell you when depending on conditions and how you drive - I was starting to get worried but just got my prompt at 6900 miles.
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post #23 of 38 (permalink) Old 03-04-2016, 12:56 AM
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Just got the prompt at 6900 miles - I was getting worried!
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post #24 of 38 (permalink) Old 03-04-2016, 01:48 AM
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Originally Posted by Tamer Bekir View Post
I would never wait that late to get an oil change, around, near or passed 10k. I do not live in a dusty or dirty area either so 4k is too soon.
It may be possible to safely exceed even 10k mil OCIs. UOA showed my Audi's oil to still have 30% more miles under the same conditions left at 12k miles.

There is a lot more to oil "wearing out" than contamination by particulates. Dusty conditions are just one factor contributing to oil becoming unsuitable.

One can measure the TBN (Total Base Number), which indicates the reserve alkalinity remaining in the oil, which is necessary to neutralize the acidic byproducts of combustion. At some point the oil's acid neutralizing capacity is exhausted. TAN (Total Acid Number) measures oil oxidation and build-up of acidic compounds.

Oil also may thicken over time due to contamination. This can result in sludge and impeded lubrication and increased/abnormal wear.

Oil can also shear (get thinner) over time due to mechanically getting "beat up" (cams, timing chains, valve train), and the resulting thinner oil viscosity may cause wear under high stress conditions (for example, high oil temperature).

Oil also can thin due too fuel dilution (fuel gets into the oil due to incomplete combustion)

Moisture can accumulate in the oil (engine does not get fully warmed up/driven only short distances). This can also cause sludge buildup.

Anti-wear additives in the oil get over time depleted.

A modern car's OLM gives a good indication regarding oil life and is a good starting point. An occasional UOA will allow maximizing oil change intervals safely.
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post #25 of 38 (permalink) Old 03-08-2016, 01:53 AM
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oil change

Currently my latitude is at 7603 miles. I went by the service department I told them about how many miles I had on my jeep. I told them I am a member of the renegade forum. That my jeep still has not said anything about a service being due. He told me to bring it in and they will take care of it. He also said I need to have my tires rotated and that can be done as well. I said thanks and will get that taken care of soon. Then tonight while I am driving I get a service engine soon light. This occurred at 7602 miles. What a coincidence I speak to the dealer about service and the jeep's service light comes on.
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post #26 of 38 (permalink) Old 03-08-2016, 08:19 AM
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Mandatory service is 10k miles. 7-8 is a fairly accurate average for an oil change interval. It doesn't sound like they changed it, however. Is it a service vehicle or oil condition warning?
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post #27 of 38 (permalink) Old 03-08-2016, 05:09 PM
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My oil change light came on at around 7615 miles. I may not have noticed it when it first came on. The message
comes on for a few seconds each time the engine is started. Had oil changed at 7619 miles. They placed their
service reminder sticker on the windshield, next service due 8/16, 13,621 miles. Of course that's only 5 k miles
or six months. They are totally ignoring the built in oil change indicator as listed and shown in the manual.


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post #28 of 38 (permalink) Old 03-08-2016, 05:18 PM
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Originally Posted by flash75 View Post
My oil change light came on at around 7615 miles. I may not have noticed it when it first came on. The message comes on for a few seconds each time the engine is started. Had oil changed at 7619 miles. They placed their service reminder sticker on the windshield, next service due 8/16, 13,621 miles. Of course that's only 5 k miles or six months. They are totally ignoring the built in oil change indicator as listed and shown in the manual.


Clifton

Corrected errors
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post #29 of 38 (permalink) Old 03-08-2016, 10:10 PM
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My light came on at about 7500 miles. I've been going for oil changes at 6000 to 7000 mile intervals. I'm at 18,000 miles, rotation of tires at every other oil change. I'm now averaging 1000 miles a week with my TH. I've been using the Ultra and signed up for the 300,000 mile warranty from Pennzoil.
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post #30 of 38 (permalink) Old 03-09-2016, 09:33 AM
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Originally Posted by flash75 View Post
Corrected errors
You didn't correct that it's 6k miles. 13k-7k=6k.

Service Engine: Mar 11; 272 miles
Service Engine: May 6; 3214 miles
Service Engine: July 16; 6305 miles
TCM Replaced: 9200 miles
Service Engine: Aug 30; 9275 miles
Service Engine: Sep 3; 9380 miles
Service Engine: Oct 10; 10,956 miles

Service Engine: Oct 31; 11,544 miles
Service Engine: Nov 14; 11,931 miles
Transmission replaced: ~12,000 miles
Service Engine: Nov 29; 12,183
At dealership 11/30-12/30.
New Wiring Harness installed ~12k miles.
Service Engine: Jan 4: 12,318 miles
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