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Sump size trends? #4836142 08/10/18 07:03 AM
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mrdctaylor Offline OP
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Like many of you on here, I normally buy my motor oil in 5 quart jugs. However, with the recent sale of my Hyundai Santa Fe, now all 4 of the cars I maintain (see below) have sumps larger than the 5 quarts you get in a jug. My cars take 5.7, 6.0, 6.4 and 7 quarts respectively. I think that's great, honestly. It should help the oil last longer. However, it is also a bit irritating that a single 5 quart jug won't do an oil change on any of my vehicles, which sometimes means mixing in a little different oil to bring it up to the right level (or buying a single quart of the same oil at an inflated price).

I guess my questions for this group are:
1) Are bigger sumps a trend? Or is this just me? I only have a sample size of 4. :-)
2) Do you think it might be time for manufacturers to go to a 6 quart jug? Or would that be too heavy/unwieldy?

I'd be happy buying in quarts again if the price was the same, but I don't see that happening very often.


02 Tacoma 3.4L, 233K, Hav ProDS 10W30 (me)
12 Highlander 3.5L, 115K, Napa Syn 0W20 (wife)
17 Escape 2.0L, 48K, Hav ProDS 5W30 (son)
Re: Sump size trends? [Re: mrdctaylor] #4836148 08/10/18 07:11 AM
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sloinker Offline
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I think that most manufacturers are trying to get longer OCI's which means a larger sump.


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Re: Sump size trends? [Re: mrdctaylor] #4836152 08/10/18 07:15 AM
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TiredTrucker Offline
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GM has taken there newer V8's to 8 quarts. At least in the pickup trucks. Can't speak to their cars. None of my GM vehicles have 5 qt sumps. The wife's 2006 Cadillac CTS 3.6 is a 6 quart sump as is my 2015 2500 6.0. I will sometimes get oil in the 5 qt jugs when on sale. I just add what I need from the second one. Not that big of a deal.


Freedom is not about having the choice to do what you want, but the choice to do what you ought.
Re: Sump size trends? [Re: TiredTrucker] #4836158 08/10/18 07:21 AM
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4WD Offline
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Our 2017 Tahoe is 8 quarts whereas our 2010 GMC is 6 quarts … both 5.3L, albeit different Gen 5.3L

Re: Sump size trends? [Re: mrdctaylor] #4836159 08/10/18 07:21 AM
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mrdctaylor Offline OP
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Nah, not a big deal in the grand scheme of things. But if you're like me and tend to buy with rebates, you end up with a bunch of 5 quart jugs of different brands, which means mixing brands to get to 6+ quarts. Again, not a huge deal...but I generally prefer to not mix if possible.


02 Tacoma 3.4L, 233K, Hav ProDS 10W30 (me)
12 Highlander 3.5L, 115K, Napa Syn 0W20 (wife)
17 Escape 2.0L, 48K, Hav ProDS 5W30 (son)
Re: Sump size trends? [Re: mrdctaylor] #4836166 08/10/18 07:25 AM
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4WD Offline
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I posted a while back that gallons would not upset me (like HDEO) …
Have an 8, 6, and two barely over a gallon …

3 out of 4 only drain a gallon of ATF too … so migrating to Maxlife jugs as old stash is thinner …

Re: Sump size trends? [Re: mrdctaylor] #4836182 08/10/18 07:38 AM
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SavagePatch Offline
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RAM 1500 Ecodiesel 3.0L is 10.5qts

I use three 1 gallon jugs. My truck doesn't use oil so I use the remaining 1.5qt for OPE and topping off ours and friends and family's cars.

I see 5qt jugs of HDEO available elsewhere but even if they were available to me I don't think the math would work out much better.

My favorite feature is a jug with a clear sight gauge.

Re: Sump size trends? [Re: 4WD] #4836184 08/10/18 07:39 AM
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Rand Offline
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Originally Posted By: 4WD
Our 2017 Tahoe is 8 quarts whereas our 2010 GMC is 6 quarts … both 5.3L, albeit different Gen 5.3L


Do they also spec different oil weights?

I feel that some of the increase in sump size corresponds to spec'ing thinner oil.


2019 Jeep Cherokee Trailhawk 2.0T
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Re: Sump size trends? [Re: mrdctaylor] #4836190 08/10/18 07:45 AM
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HKPolice Offline
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This is definitely the trend. Take Toyota's V6s for example: 1MZ/3MZ 3.0/3.3L both are 5qt sumps. Newer 2GR-FE V6 3.5L = 6.4qts

Corolla:
1ZZ-FE 1.8L = 3.9 qts
2ZR-FE 1.8L = 4.4 qts

Camry:
2AZ-FE 2.4L = 4.0 qts
2AR-FE 2.4L = 4.65 qts

I think a lot of this has been influenced by North American owners' habits as they're more likely to neglect oil changes.

I don't think oil manufs will ever go beyond 5qt jugs, valvoline already sells a 24qt "Bay Box" container but it's not targeted at end users.

Re: Sump size trends? [Re: mrdctaylor] #4836193 08/10/18 07:48 AM
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wdn Offline
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It just increases the price of an oil change. I can see for the V8s. My 2004 Tundra now that I use the oversized 1-quart Wix 51515 filter, takes 7 quarts. Stock it takes 6.5 quarts.

Fewer people are buying cars and more are buying trucks and SUVs. But that still does not account for year to year increases in motor oil capacity for the same model. Then you also have to ask yourself why are they still using the same midget oil filters.

Re: Sump size trends? [Re: wdn] #4836196 08/10/18 07:52 AM
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Quattro Pete Offline
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Originally Posted By: wdn
It just increases the price of an oil change.
Sure, but with less frequent oil changes now made possible, the overall maintenance cost should stay the same or decrease.

Quote:
Then you also have to ask yourself why are they still using the same midget oil filters.
I'm not seeing any evidence that engines are becoming more and more dirty, so why would larger filters be needed?


✰ 2002 530i   ✰ 2015 Q5 3.0T   ✰ 2018 Charger SRT
Re: Sump size trends? [Re: mrdctaylor] #4836204 08/10/18 07:59 AM
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Quattro Pete Offline
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Originally Posted By: mrdctaylor
However, it is also a bit irritating that a single 5 quart jug won't do an oil change on any of my vehicles, which sometimes means mixing in a little different oil to bring it up to the right level (or buying a single quart of the same oil at an inflated price).
I haven't had a car that required 5 qt or less in ages, so that's kind of normal for me. I just buy an extra 5qt jug if I need to and keep it for top offs and to use up for the following oil change.


Quote:
1) Are bigger sumps a trend? Or is this just me? I only have a sample size of 4. :-)

All three of our vehicles have 7 qt sumps. Not sure if it's a trend though.

Quote:
2) Do you think it might be time for manufacturers to go to a 6 quart jug?
They just need to add a "free 20% more" sticker like they do on soap/shampoo/lotion containers. smile


✰ 2002 530i   ✰ 2015 Q5 3.0T   ✰ 2018 Charger SRT
Re: Sump size trends? [Re: mrdctaylor] #4836208 08/10/18 08:03 AM
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Snagglefoot Online Content
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Behold the 10 quart jug. Coming to a store near you?



If you want the job done right......do it yourself.
Re: Sump size trends? [Re: Snagglefoot] #4836215 08/10/18 08:17 AM
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Quattro Pete Offline
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Originally Posted By: Snagglefoot
Behold the 10 quart jug. Coming to a store near you?
Yeah, Rotella has been available in 2.5 gal jugs down here for years. Chevron Delo and Mobil Delvac come in 2.5 gal jugs as well.



✰ 2002 530i   ✰ 2015 Q5 3.0T   ✰ 2018 Charger SRT
Re: Sump size trends? [Re: mrdctaylor] #4836216 08/10/18 08:17 AM
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I never really thought about it much but my guess would be that it is two fold.

1) Car makers want to keep the oil change intervals long. With today's high power/displacement ratios you need the extra oil to ensure that the oil can hold up to long oci's.
2) There is a push to keep oil viscosities on the lower side. Having the larger sumps would also aid in keeping the oil cooler which would reduce the chance of the oil film breaking down under extremes.

Just my thoughts. Long oci's and keeping oil cooler would be the only reasons that would make sense to me.

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