[redwngr]

I'd rather be 1/2 qt down than 1/2 qt over.

 

[Oh Chevy Diesel]

7 qts is with a new filter. The filter holds approx 1/2 qt. Did an oil change yesterday but since my driveway is inclined, I’ll need to check the level at work tomorrow.

 

[redwngr]

Stupid question, but do you guys pour all 7 quarts of oil in or only 6.5 (like the actual spec says)?

7 qts is with a new filter. The filter holds approx 1/2 qt. Did an oil change yesterday but since my driveway is inclined, I’ll need to check the level at work tomorrow.

My bad.

When I read the initial post I was thinking litres, but responding to a question in US quarts.

3.0L supplement says capacity for is --- Engine Oil with Filter 6.6 L 7.0 qt

I'd still rather be down 1/2 than over 1/2....
and my preference is to hold back the last 1/2 until able to verify that the drain was complete and it won't be over.

 

[Oh Chevy Diesel]

My bad.

When I read the initial post I was thinking litres, but responding to a question in US quarts.

3.0L supplement says capacity for is --- Engine Oil with Filter 6.6 L 7.0 qt

I'd still rather be down 1/2 than over 1/2....
and my preference is to hold back the last 1/2 until able to verify that the drain was complete and it won't be over.

That's not a bad practice to follow. With our steep driveway, draining the oil is quick but I need to find a level parking lot to check mine after filling Our streets are too busy for me to pull out and block the road. So I opt for a full filter and the remaining 6-1/2 qts and check it at work.

 

[Stbentoak]

.If you let it drain for a good half hour as I do ( While you are doing other tasks..) There really is never a worry about dumping in 7 quarts. Its always right on the full mark, and even if it was 1/32 or even 1/16 of an inch over the top line, I wouldn't worry about it on a 7 quart engine. Overfull to me means 1/4 to 1/2 inch high on the stick and that is decidedly more than 7 quarts.....

 

[duramaxhall]

Question - I have about 24% oil life remaining. I checked my oil and I was all the way at the bottom line. The only option I had was (O'Reilly's) and they did not have DexosD. I did get the Dexos Valvoline Synthetic, and added a quart. I figured that should be fine for the next 1,000 miles until my oil change, but wanted some insight.

 

[Border Bandit]

Well,that’s stuff is not a Dexos D oil so………

 

[Stbentoak]

A plan I've always followed is to always keep a quart of what your vehicle uses in the toolbox/under seat from day one. Suck it up and buy one from the dealer when you pick it up.
Then no matter what you have the right thing in any situation to get you down the road. Exchange them with new and use it up on each change....

 

[duramaxhall]

Well,that’s stuff is not a Dexos D oil so………

Yeah I decided it was a screwup not worth messing with. Changed the oil myself to Dexos D from the dealer.

 

[wade_660]

Your truck would never know the difference


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[Border Bandit]

Your truck would never know the difference


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True….but your 100K GM warranty might?

 

[09BLKDUALLY]

I noticed a box of 0-20 Dexos oil at Costco yesterday, one box was open so I pulled out the jug and it had the 0-20 Dexos sticker near the bottom and said approved for those of you that might want to check it out? Too early for me I am waiting to order the new 2022 when they accept orders.

 

[09BLKDUALLY]

I noticed a box of 0-20 Dexos oil at Costco yesterday, one box was open so I pulled out the jug and it had the 0-20 Dexos sticker near the bottom and said approved for those of you that might want to check it out? Too early for me I am waiting to order the new 2022 when they accept orders.

I reread the label, approved for Dexos 1&2 but not Dexos S, so it pays to read the label carefully.

 

[09BLKDUALLY]

I reread the label, approved for Dexos 1&2 but not Dexos D, so it pays to read the label carefully.

 

[tdhanses]

I reread the label, approved for Dexos 1&2 but not Dexos S, so it pays to read the label carefully.

You mean Dexos D?

 

[Border Bandit]

Dexos D

 

[redwngr]

There are now 3 oils approved to dexosD

Brand Name	Supplier	Specification	Viscosity	License Number
ACDelco Light Duty Diesel	General Motors	dexosD™	0W-20	DD0751IA015
Mobil Super 3000	ExxonMobil Oil Corp.	dexosD™	0W-20	DD25BBBK015
Mobil Super 3000 XE2	ExxonMobil Oil Corp.	dexosD™	0W-20	DD0752IA015

 

[09BLKDUALLY]

Good info, but approved Dexos D in general means that the oil manufacturers have jumped through the hoops that GM has specified and that takes time and money. There may even be a licensing agreement cost. There will be other Dexos D oils that say they meet the specs. but don't have the right to say they are approved. In the end I will use one of oils that meet the specs but are not GM approved. Bottom line is it is your vehicle so you get to decide whuch oil you choose to use even though GM might use that as an excuse to try and deny warranty caused by a lack of lubrication. IMO I haven't found the edit function so that is why it took a couple of posts to correct the S to D.

 

[redwngr]

Good info, but approved Dexos D in general means that the oil manufacturers have jumped through the hoops that GM has specified and that takes time and money. There may even be a licensing agreement cost. There will be other Dexos D oils that say they meet the specs. but don't have the right to say they are approved. In the end I will use one of oils that meet the specs but are not GM approved. Bottom line is it is your vehicle so you get to decide whuch oil you choose to use even though GM might use that as an excuse to try and deny warranty caused by a lack of lubrication. IMO I haven't found the edit function so that is why it took a couple of posts to correct the S to D.

There are 100's of oils that meet the other dexos standards -- if cost was the issue there wouldn't be.

 

[09BLKDUALLY]

There are 100's of oils that meet the other dexos standards -- if cost was the issue there wouldn't be.

Sorry but I have to disagree that cost isn't an issue. Cost is always part of the bottomline in any business except for governments in North America. Many oil manufacturers will not spend the money to get the Dexos D licensing because they test their oils and have their own warranty and unless they are the primary supplier to GM they choose not to; however, each owner gets to make their own choice as long as they understand the consequences.
I have been in the oil industry on the exploration and completions end for 50 years and have seen many previous requirements by manufactures for their spec/approved/branded oil during the warranty periods: eg. Cat, Cummins, GM, Detroit, Allison/Skidoo/Canam etc. I am not trying to change anyone's mind on what they should use in their 3.0 Duramax.