Finding T6 10W-30
FTE Legend
Joined: Mar 2017
Posts: 31,982
Likes: 9,200
From: Western NY
My local Advance Auto carries Rotella but haven't seen the new T6 10w30 yet... I haven't checked NAPA yet though. I'm actually stocked up pretty good on oil so I forgot Shell was coming out with this stuff.
FTE Legend
Joined: Mar 2017
Posts: 31,982
Likes: 9,200
From: Western NY
https://rotella.shell.com/en_us/prod...synthetic.html
https://www.enginebuildermag.com/202...ty-engine-oil/
"Shell Rotella T6 10W-30 will be available for sale on Amazon.com beginning first quarter of 2023."
FTE Legend
Joined: Mar 2017
Posts: 31,982
Likes: 9,200
From: Western NY
I'm stocked up for the next 6 oil changes... so not like I'd be buying it anytime soon... if it ain't out by then, then maybe it never will be. We are living in some strange times so who knows what's going on...
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Laughing Gas
Joined: Nov 2007
Posts: 824
Likes: 179
Not to switch brands, but if you're in a bind maybe see if Delvac Extreme 10W-30 is available somewhere, it is a full synthetic with a very stout add pack (over 1200ppm Ph & Zinc). Walmarts by me carry the 15W-40 Delvac Extreme at good prices.
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Cargo Master
Joined: Jul 2011
Posts: 2,679
Likes: 983
From: Walpole, MA
Heard about it coming but haven't seen it yet.
^ Rotella T5 or Delvac blend are good 10w30 options as well. I think jegs or summit has Delvac 10w30 for a pretty good price.
Outside of some slightly better shear stability however in a non-HEUI application as you said not going to matter much.
FTE Legend
Joined: Mar 2017
Posts: 31,982
Likes: 9,200
From: Western NY
I see your point but many big trucks, although they have more oil than our 6.7s, way more oil, that run 10w30 oil. I'm no expert on oil viscosity but just commenting on what I've read when looking into it.
Tuned
Joined: Jul 2021
Posts: 372
Likes: 199
From: NE Oklahoma
+1 the 5W40 flows better in the cold of winter and can handle the heat in the summer when there is a load behind the 6.7. We all know the oil temp in the 6.7 climbs up there quite a bit when towing.
Cargo Master
Joined: Jul 2011
Posts: 2,679
Likes: 983
From: Walpole, MA
Another thing to consider is FA-4 oils, offered in concurrency to CK-4, are dominated by Xw30 oils due to the lower HTHS thresholds. FA-4 is not compatible with CK-4 and can't be used interchangeably.
That said I am a heretic running a 15w40 in my truck cause I did not plan out my oil change properly last time.