I talk to my friend that works at a large fleet of trucks cars and vans. He said they use a synthetic blend 15w-40 in everything. Has not had any issues and vehicles sit outdoors some. Anyone here use a 15w-40 in their gas car or truck or van?
Anyone use 15w-40 in their gas vehicles?
- Thread starter 53' Stude
- Start date
Yes, but that vehicle is driven in South Florida; it's a 2008 Honda CRV. I will use it up here too, but only in the summer on selected models, so while at Walmart last night I picked up 2 clearance jugs of ST for only $9 each. 
Last edited:
I have thought about it. Do you know what he uses - a lot of the 15W-40's have dropped all their gasoline certifications.
The Providence brand 15w-40 by the drum
Yep, have run 15w40 in gassers plenty. Bunch of small block Chevys, a small block Ford, and even my 08 Subaru. A pile of small engines. Forklift at work.
Never an issue, but never ran it in something modern that specs 0w20. Would do more research before doing so.
Depending on winter temp and with the oil options available these days, I'd probably run a 0w40 or 5w40 as an all fleet oil instead.
Never an issue, but never ran it in something modern that specs 0w20. Would do more research before doing so.
Depending on winter temp and with the oil options available these days, I'd probably run a 0w40 or 5w40 as an all fleet oil instead.
Dunno about the 0w-20 as member HOHN uses it in 2 modern vehicles and he’s in Indiana so it gets somewhat cood
Providence brand is CK-4 and SN
Like I said, more research first. Cst at temp for specific oils I'm considering, what oil does the engine spec in other countries, what have people been doing here successfully, etc.
Works out to $2.91 per qt from Rural King before taxes. $640 per 55 gallon drum.
Same with the ST, I just went and checked the jugs.
I have it in my 89 wrOngler with a 93 Cherokee engine. It has 5 psi hot idle with 15w40, 0 with anything else
I think the last time I used that weight oil was in my 1968 Dodge Charger with a 440 and a 1973 Plymouth Road Runner with a 440....
Here's another 15w-40 syn blend. $599 shipped to your door. $10.89 per gallon / $2.72 per quart.
https://buysinopec.com/products/synthetic-blend-15w40-diesel-engine-oil
Meets Performance Requirements of:
https://buysinopec.com/products/synthetic-blend-15w40-diesel-engine-oil
Meets Performance Requirements of:
- API CK-4, CJ-4, CI-4 Plus, CI-4, CH-4
- API SN
- Ford WSS-M2C171-F1
- Cummins CES20086, CES20081
- Volvo VDS-4.5, VDS-4
- Detroit Diesel 93K222, 93K218
- Mack EOS-4.5, EO-O, EO-M; Premium Plus 07, Premium Plus 03, Plus
- JASO DH-2
- Renault RLD-4, RLD-3
- ACEA E7/E9
- MB 228.31
- MAN 3575
- Deutz DQC III-10 LA
- CAT ECF-3, ECF-2, ECF-1a, ACEA E7-04 Issue 2 (2007)
- MTU Type 2.1
- PACCAR API CK-4
If I did lots of highway miles in a climate that never got much below freezing, then its not a terrible idea. We have subaru's with high flow oil pumps so I don't want to send the filters into bypass longer than necessary trying push some very very viscous oil through for every cold start for 6 months of the year. For our subaru's or any KISS engines in Florida, 15W40 would do the job, without a problem.
Actually, some/all/many 15W-40's are API SN rated. I know Rotella T4/5/6 are as well as both SuperTech varieties.
I ran a lot of 15W-40 in warmer months in my EJ-powered Subarus and mowers. If it gets real cold where you're at 5W or 0W-40 might be better in winter.
$549 if you buy 4+. Never run across this brand before.
Here is a VOA of their fully synthetic 15w-40
