Modern Oil Consumption and Warranties

[shady]

Well, you folks got me to wondering. I'm driving a 2019 Honda Passport with the V6 engine. Bought it last June or close to that. I'd have to look it up.
Just ran out of mileage warranty. The factory warranty is only 36K. I considered an extended warranty, but decided against it. The dealership give me a lifetime powertrain warranty. Not sure how good it is, but have heard no complaints. It even covers timing belt replacement.
So far, I have been letting them do the service because they seem to do a good job, and the rates are reasonable. I did pay extra for some nonscheduled service.
I had them change the engine oil, transmission fluid, transfer case and rear end fluid at about 2K.
I have done that to every new vehicle, to get the initial wear particles out.

Using the service monitor it calls for oil changes about every 5K. Varies from time to time.
When the car was new, I checked under the hood several times. But, after everything checked out OK, I let it slide. After all, it was a brand new car and in warranty.
Its due for a service now, and will go in the shop Wed. Its a B1 service, but they have an additional procedure at 40K, and I have about 37, so I'm going to go ahead with that one.
In addition to changing the oil and filter, which is the B service, and rotating the tires, which is the 1 part. They will change the transmission fluid and transfer case fluid.
I'm going to ask about the rear end, since it has two multidisk clutch packs in there which are constantly slipping and locking up as you drive along under 50, and if you are going off road.
Basically the rear end is a spool with a computer controlled clutch pack between the spool and each axle. The computer controls the amount of lockup for each pack, which acts as a differential.
With all that slipping of the wetted clutch plates, an oil change might be a good idea.

The reason for this post, is that I checked my oil today, and it was full after about 5K. No oil use at the 37K mark.
However, except for one time for about 10 minutes of driving, the "economy" button has never been pushed.
Pushing that button does several things.
It cycles the AC compressor, leaving it off longer. The owner's manual states that cabin temps might run a little higher than otherwise.
I live in Fl. When I call for cold, I want cold.
Plus, I understand that it uses the variable cylinder trick. Disabling cylinders according to engine load.
I have heard that in some cases, that can increase oil use, as the lower pressure in the non-firing cylinders can let oil get past the rings.
I just don't like the idea of disabling cylinders, even though the system has improved since the old Cadillac days.

I told my girl in Ca., when she asked why I did not want to get the best gas mileage I could, that I paid for 6 cylinders, and by God I wanted the use of 6 cylinders.
She is convinced I'm nuts........

We tried the 'Economy' button in my wife's '18 grand caravan on a trip once and our average mpg went down 2mpg.
Figured it was a fluke, or wind, etc.
So on another trip we tried again, and it went down again......
Fork that fake economy button.

 

[bigjimmy82]

DD is an ‘06 Acura TSX, 2.4 4 cylinder, vtec on both intake and exhaust. Recommended 5w-30 switched to 5w-40 about 30,000 again, reduced consumption. As said before 0w oil is only for CAFE not the long life of your engine. Also the owners manual details the oil life monitor is just an algorithm of starts/rpm/throttle/run hours/etc, no actual oil sampling. After 4,000 miles, my OCI, it says 30-40% left. Car is at 247,000.

edit: the only vtec related codes have been due to low oil, from consumption, seem unrelated to oil viscosity

 

[longbedder]

Synthetic is tits for cold weather starting...it's all I run in my '17 GMC. It doesn't use a drop between changes.

Conversion factor, eh...

0W Canadian is like 10W American (especially in the southwest...)

 

[imiceman44]

The wife has an '18 Honda Pilot with 32,000 miles. I hate it (really hate it), she loves it.

I hadn't been marking the mileage between changes...but prolly will now. I've just been going by the oil life meter.

Anyway, change before last it used a quart. Last change was Tuesday and it was down 1-1/2 quarts. I personally find that very unacceptable...but reading around the interwebs Honda seems to be dodgy and claiming 1qt per 1k is considered in-spec and normal.

Thoughts?

My 09 Honda accord was using too much oil, I started checking how fast and realized it was 1 qt at 3000 miles, I guess not too bad even though it only had 90,000 miles.
I started adding oil every 3k and changing the oil following the oil life meter.
My 89 suburban didn't burn any oil, even when I ran it 7 years 25k miles trying to kill the engine

 

[Chief Brody]

I don't get it...my Pilot with nearly 250,000 doesn't even use 1/2 quart in 3000 miles...it stays between the high and low marks even the odd times I forget and go 5000 miles.

 

[diesel4me]

I've noted some oils seem to "evaporate" ,the level ends up a quart or more low despite no visible leaks or smoking..
The super low viscosity oils must get consumed faster I would imagine..
Oils with a higher flash point will be consumed more slowly than others with a lower flash point...

I've noted engines I had I used 10W-30 or 20W-50 in didn't go a quart low as quickly when I started using 15W-40 with a higher flash point..Most every vehicle I've owned had at least 100,000 on them when I got them,and I didn't bother rebuilding an engine if it used a quart every 500-1000 miles or smoked a bit..as long as they ran decent and didn't foul plugs or smoke screen bad,I just drove them..kept the oil full..