Oil Life Monitors

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I recently purchased a new auto not long ago and it was my first in close to 10 years. Naturally, some changes have taken place over that span of time and one of the changes is an oil life monitor.

My question is how good are those things? Are they more gimmick and hype than useful. Thanks to anybody who replies.
 
The jury here says it's a fabulous invention, but I personally don't go over 5K miles no matter what.
 
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Originally Posted By: Oil_Can_Harry
I recently purchased a new auto not long ago and it was my first in close to 10 years. Naturally, some changes have taken place over that span of time and one of the changes is an oil life monitor.

My question is how good are those things? Are they more gimmick and hype than useful. Thanks to anybody who replies.


I assume this is for the 09 Mercury GM listed in your signature? I am not familiar with Ford's OLM setup. GM's works very well however. Had 3 Chevy's with the OLM and they worked pretty well I thought. I have a Dodge Ram now with one that seems to be working good as well.

The GM ones work the same from day 1 while the Chrysler ones seem to have an initial trip point of 2500 set from the factory and then they start to work based off the use of the engine. The Chrysler one seems to be more conservative than the GM one.

Basically unless the mfg sets them up with preset mileage trip points they will use a mathematical algorithm that uses certain factors( based on how you use the vehicle )to determine when an OC is needed. OLM's actually do not in anyway check or monitor the oil. How you drive determines when they trip.

On my Chevy's I would see anywhere from 20%-50% oil life remaining at the 5K mark when I do my OC's. If I towed my boat, did a lot more city driving than normal, or let the truck idle a lot in the winter to warm up it went down faster than if I did more highway in warmer months without any towing. It really was effected by how I drove. On my new Ram it kicked on right at 2500 miles as everyone said it would. Some have said it kicks on every 2500 until upwards of 10K but on mine it seems to be working based on usage now. I did an OC at 4800 miles and reset it( had not come on - I just reset it at the OC )and it has not come on yet and I am at 9300 miles.

The GM and Chrysler ones seem to work well. I would assume no less from your Ford one. I would trust it myself.

Congratulations on your new ride.
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There is science and calculations behind it and it's probably a better, i.e. more effective, way of changing the oil than an arbitrary number like 3 months or 3,000 miles pushed by the oil change industry.
 
Originally Posted By: Papa Bear
The engineer's science and calculations are so easily trumped by "personal opinion"...


Unfortunately, a lot of times, the philosophy is that "we don't need no stinking science".
 
I know on my 2007 Chevy Cobalt, following the OLM down to conditions. My 2008 Odyssey would be at around 7Kmi @
Joel
 
My thanks to everybody who replied. Being the factory fill is likely Motorcraft Semi-Synthetic 5W-20, I will go with 5k miles for oil change to be safe even though the OLM is currently projecting something like 7,000K miles before oil is used up. The reading may be a result of my driving style, but I wanted to get a sanity check from people with more experience with OLM's.
 
My Buick is at 38% oil life left, after 5 months and ~5300 miles on Castrol GTX 5w30. I'm having the oil swapped out this week, because that 5000-mile thing is making me a bit nervous . . . but I can't help but wonder if I could push it to 6K.

I wasn't planning to, but perhaps I'll send a sample of this fill off to Blackstone.
 
Maybe Ford has changed how there OLM's work, but as of a couple of years ago, there was no logic/calculations--it was a simple mileage counter. Ford's current OCI recommendation for most vehicles is 7.5K, so if it's the same as mine it'll start giving you messages when you get to 5% life.
 
It mostly depends on what type of driving you do. If you do a lot of long road trips or your commute is long, then I would say you could probably go to 7500. On the other hand, if you mainly do short errand type trips and the car never really warms up, maybe 4000 miles.
 
Originally Posted By: CivicFan
Originally Posted By: Papa Bear
The engineer's science and calculations are so easily trumped by "personal opinion"...


Unfortunately, a lot of times, the philosophy is that "we don't need no stinking science".


So true! Most people figure they know better then the company or engineers that designed the vehicle!
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I have a 2005 Chevy Trailblazer with the I6 engine and the OLM works very well on it. If your vehicle has an OLM use it.
 
Originally Posted By: Oil_Can_Harry
My thanks to everybody who replied. Being the factory fill is likely Motorcraft Semi-Synthetic 5W-20, I will go with 5k miles for oil change to be safe even though the OLM is currently projecting something like 7,000K miles before oil is used up. The reading may be a result of my driving style, but I wanted to get a sanity check from people with more experience with OLM's.

I would say change it out a bit earlier, since it is on the factory fill, but after that you should have no problems going 7000 on Motorcraft 5W20.
 
Change the factory fill out early. Then follow the oil life monitor.

The one on an 09 Honda Fit will take you over 10k miles on conventional oil at times. It's a 1.5l, 117 hp engine that strangely for a Honda has some grunt down low, so it's not working too hard.
 
Originally Posted By: Oil_Can_Harry
I recently purchased a new auto not long ago and it was my first in close to 10 years. Naturally, some changes have taken place over that span of time and one of the changes is an oil life monitor.

My question is how good are those things? Are they more gimmick and hype than useful. Thanks to anybody who replies.


On my sisters 07 Grand Marquis it comes on at 3K miles...She uses Full Synthetic Motorcraft...I told her to go at least 5K miles before she changes it...She asked the Ford Lincoln Mercury dealer to reset the oil life monitor to 5K miles but they claim there is no way to do it.
 
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