Reasons you Prefer 10W30 Synthetic Oil ?

[PimTac]

For a modern vehicle that doesn't routinely see temps below 20 degrees F. such as in the South , Pacific NW , etc.) 10W30 is an option -

The PNW covers a pretty big area. A lot of it sees single digit and below zero temps in the winter.

 

[Freischneider]

Boy I hope you grabbed a few of those.

Every one of them haha.
I have no idea why they were on clearance because they still have the same product on the shelf at normal price.

 

[blupupher]

I have no need for a 5w or 0w oil where I live.
10w-30 has all the cold weather pumpability I need, and I am still a believer the narrower the spread between the winter rating and the viscosity, the less chance of the oil thinning. Is it true, no idea, but it makes me feel good inside.
Not that I am against using a 5w-30 oil, but if a 5w-30 and a 10w-30 on on the shelf at the same price, I will probably grab the 10w-30.

 

[FCD]

The problem is that usually, with the majors, they just reduce the base oil quality instead; make the product cheaper to formulate. Mobil is quite upfront about you being able to blend a 10W-30 with no group III using just their EHC Group II/II+ products, along with a 5w-30 (but you can't do dexos).

Example:
View attachment 107135

85% of the base oil blend is 5cSt EHC Group II+. Drop the HTHS to PCMO levels and you'd use less of the 120 I suspect.

I THINK I have some Yubase examples too, but with the lack of popularity of 10W-30 and it being excluded from dexos, I suspect with the majors that it's kind of the opposite approach to the 0W-40's where they have to use better bases to keep the Noack down and meet the performance specs. They can get away with making the 10W-30 pretty cheaply because it is basically obsolete for PCMO applications.

Where do you keep finding these graphs? they're very interesting

 

[OVERKILL]

Where do you keep finding these graphs? they're very interesting

The material is out there to be found if you know where to look

 

[Jackson_Slugger]

I tend to fall on the "thin oil" side although I'm both really. I think 10W-30 still has a place especially in higher mileage applications. I think the last car that actually called for it was the Chrysler/Dodge 3.5 HO? I know a lot of GM 3800's called for it in the 2000's after initially recommending 5W-30 in the earlier LeSabres and Bonnivilles.

But even here the 5W-30's are nearly all listed as synblends and can easily be used in the above applications whereas a 10W-30 can still be a "conventional". Though I am guessing they still contain some Group III at least..

 

[OVERKILL]

I tend to fall on the "thin oil" side although I'm both really. I think 10W-30 still has a place especially in higher mileage applications. I think the last car that actually called for it was the Chrysler/Dodge 3.5 HO? I know a lot of GM 3800's called for it in the 2000's after initially recommending 5W-30 in the earlier LeSabres and Bonnivilles.

But even here the 5W-30's are nearly all listed as synblends and can easily be used in the above applications whereas a 10W-30 can still be a "conventional". Though I am guessing they still contain some Group III at least..

Very unlikely, per the item I posted from Mobil, cheapest route, and thus most probable, is Group II+.

 

[2strokeNorthstar]

Wife’s Nissan turbo DI motor uses noticeably less 10w30. 90% highway use.

 

[Jackson_Slugger]

Very unlikely, per the item I posted from Mobil, cheapest route, and thus most probable, is Group II+.

Mobil probably, but guessing for companies like SOPUS, it's probably cheaper to use leftover GTL than to fully blend a II...

 

[OVERKILL]

Mobil probably, but guessing for companies like SOPUS, it's probably cheaper to use leftover GTL than to fully blend a II...

Shell has lots of bases that aren't GTL too, they are still using their HVI and XHVI bases for example. It all just comes down to cost, Mobil sells a LOT of their EHC bases, because they are inexpensive and can reduce the cost and increase the margin on retail products like the one we are discussing.

Shell's SDS sheets are basically useless now, but if we look at Castrol:

Then look at Mobil:

And yes, that CAS # captures a LOT of base oils, but it's a compelling reference.
Oh, and there's this:

To get an idea of what chemicals Shell handles, including those from 3rd parties, you can check here:
https://www.shell.com/business-cust...ortation/marine-cargo-chemicals-handling.html

The products from Mobil mentioned are:

 

[addyguy]

I still think it is a useful grade in the summer; a little thicker base oil, a little less VII, a little lower NOACK can’t be a bad thing in the heat of summer.

 

[1 SX]

Alot of small engines for lawn mowers, tractors and so forth call for 10W-30...

That is all I use 10W-30 synthetic for. All the 4 cycle small engines, tractor, push mower, power washer ect…

I would not have a problem using it in my car either though.

 

[blupupher]

10w-30 is definitely on its way out the door, but we've been saying that for 10+ years now. Some vehicles as late as the early 2000's still spec'd 10w30 (Chrysler 3.5l for example), so once these are all fully off the road I suspect demand to drop....

My 2018 Santa Fe and 2018 Kia Soul spec it for temps above 0°F.

Santa Fe:

Soul:

10w-30 is the only oil I have used my Santa Fe since I got it 25,000 miles ago. (Delo XLE twice, Pennzoil Platinum 4 times, and currently Pennzoil Platinum Ultra).
Next change will probably be with 5w-30 since I am out of 10w-30 in my stash (but have debated using the Rotella T6 0w-40 in my stash).

 

[Ls1z]

I still think it is a useful grade in the summer; a little thicker base oil, a little less VII, a little lower NOACK can’t be a bad thing in the heat of summer.

Right on with you here in the south its an avg of 90+ for a good 7-8 months per year or so, I like the slightest advantage, maybe meaning less but I'm old school lol

 

[Chris142]

Jeep recommended 10w30 up to the 2007 model year. It's generally what I use in mine but have ran other weights occasionally. It does not like thicker oils.

10w-30 is definitely on its way out the door, but we've been saying that for 10+ years now. Some vehicles as late as the early 2000's still spec'd 10w30 (Chrysler 3.5l for example), so once these are all fully off the road I suspect demand to drop.

10w-30 is still a great oil for OPE, farm equipment, boats, etc. so it'll never truly go away.

 

[Chris142]

The price.
View attachment 107147

Time to clean that store out!

 

[Freischneider]

Time to clean that store out!

I did!!

 

[joekingcorvette]

I thought my Corvette was supposed to use 10w-30 and I purchased a 5 quart jug of Mobile 1 Extended performance oil which is good for 20,000 miles. Low and behold I changed the oil yesterday and the cap said 5w-30 Mobile 1 recommended. I run the oil one year which is a little less than 5,000 miles. The car has 77,000 something on it now.

 

[BigCahuna]

JKV, in the 5k miles you put on your Vett, how much oil is consumed between changes ?.,,,

 

[DriveHard]

Why, when there is 0W-40?