Trying to find "The One" 15w40 oil to use across my whole fleet (pre-emission diesel and gas engines)
- Thread starter TrazTractors
- Start date
EXCEPT for really old gas engines that have been run on ND oil their entire lives, because the detergents will break sludge loose & potentially clog the pickup.
Except that detergents in an oil aren't detergents in that sense. Any cleaning in an oil is due to an ester or AN base stock.
- Joined
- Jul 20, 2020
- Messages
- 60
If you have rural king nearby they carry a house brand of HDEO the additive packs are stout as well.
CleanSump
Site Donor 2022
Pick a dual rated diesel/gas oil you want to run in your 7.3L Powerstroke and use it for everything.
The old Kohler gas engines don't care if it's non-detergent/low ash or not. Oil today isn't the crappy oil of the 1950's/1960's.
The only thing that would be picky is if you have a 2-stroke diesel engine. Then you'd need a specific oil.
The old Kohler gas engines don't care if it's non-detergent/low ash or not. Oil today isn't the crappy oil of the 1950's/1960's.
The only thing that would be picky is if you have a 2-stroke diesel engine. Then you'd need a specific oil.
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- Mar 19, 2022
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I tend to over think stuff as well.
For your needs, you will not see any appreciable difference. Non-emissions diesels and ULSD are really bomb-proof. I have several as well. A T444E in an International truck, and several Yanmar 3 cyl IDI engines.
For your old gas engines, any HDEO that doesn't thin out to water with the expected oil temps will be fantastic.
I'm in agreement that a non-detergent oil should really never be used, there is no advantage. I have a 1954 Farmall Super M and it get Rotella T4, and must have a million hours on it....no way to tell. Just keeps running.
For your needs, you will not see any appreciable difference. Non-emissions diesels and ULSD are really bomb-proof. I have several as well. A T444E in an International truck, and several Yanmar 3 cyl IDI engines.
For your old gas engines, any HDEO that doesn't thin out to water with the expected oil temps will be fantastic.
I'm in agreement that a non-detergent oil should really never be used, there is no advantage. I have a 1954 Farmall Super M and it get Rotella T4, and must have a million hours on it....no way to tell. Just keeps running.
Any 15w40 oil will work. All have additives that meet API specs at a minimum. Buy what is on sale. Pay attention to the deals that you will find on BITOG. I have around 40 gallons of Delvac 1300 15w40 that I picked up for an average of $6 dollars a gallon thanks to BITOG. 5, 2.5, and 1 gal containers. 15w40 oil works in pretty much all applications from air cooled to liquid cooled engines regardless of cubic inches. What matters is that the engine has oil in it, not the brand. Don't overthink it because we all have done the same.
Traz, I see this is an old thread but I'll throw this out there anyway, Schaeffer's 15/40 700 series, para synthetic is a fantastic oil for your applications. I have been using it in my Deere and Takeuchi iron and in my dump trucks for 17 years. It is a CK4 oil loaded with 2 of the best friction modifiers on the planet--micron moly and penetro.
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At what Mileage did the OLM go off, or usually go off?
Not sure, but for this MY GM, it's usually around 9 or 10,000 mi. My early 1999 models were set for about 12,000 mi. Keep in mind, his use case was mostly highway in NC.
10,000 Highway Miles on Shell Rotella T4 10W-30 is great, we have members who either like this oil or do not like this Oil. I really like the HTHS Number of this Oil!
T6. pc
I run Mobil delvac1 5w40 in every machine and vehicle I own but my maxima and tahoe. They get 5w30. Log splitters, two side by sides, three different generators, two tractors. Zero issues and do 15k oci on my maxima, tundra, and tahoe.
The best 15w40 is a 5w50 A3/B4.
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