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Old 03-02-2015, 09:22 PM   #1
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Using store-brand motor oils, yes/no

I have always used either Shell Rotella or Mobil Delo 15W40 motor oil in my diesel engines. Today I saw this motor oil and it caught my attention. A synthetic-blend 15w40, 5qt jug for $9.99. Sound too good to be true,and most of the time it is. I didn't have time to read the back label to determine if it was certified by diesel engine mfgrs as meeting their standards.
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Old 03-02-2015, 09:42 PM   #2
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Quote:
Originally Posted by Ray,IN View Post
I have always used either Shell Rotella or Mobil Delo 15W40 motor oil in my diesel engines. Today I saw this motor oil and it caught my attention. A synthetic-blend 15w40, 5qt jug for $9.99. Sound too good to be true,and most of the time it is. I didn't have time to read the back label to determine if it was certified by diesel engine mfgrs as meeting their standards.
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Look for API service category "CJ-4".


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Old 03-03-2015, 12:22 AM   #3
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That oil didn't show being available in 15W40 (diesel oil.)

I buy my oils at Walmart as it's cheaper there, and extra quarts are available everywhere.

If you've had no problems running dino oil in your diesel, why change? I switched over to a lighter weight full synthetic oil, and my truck was very hard to start. I've since gone back to the 5 quart Motorcraft 15W40 diesel oil, and it runs better.
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Old 03-03-2015, 09:47 AM   #4
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Quote:
Originally Posted by Ray,IN View Post
I have always used either Shell Rotella or Mobil Delo 15W40 motor oil in my diesel engines. Today I saw this motor oil and it caught my attention. A synthetic-blend 15w40, 5qt jug for $9.99. Sound too good to be true,and most of the time it is. I didn't have time to read the back label to determine if it was certified by diesel engine mfgrs as meeting their standards.
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You spend the extra $$$$ for a diesel engine and now someone is considering a low cost oil for this very expensive outlay.

To me that is like installing a K&N filter on the engine just to save a penny. In the long run will the engine last the 300K + miles that a diesel engine is suppose to.

I will use a major brand oil and filter over store brand and inferior filters any day. They have to cut cost somewhere and quality is always the first thing too go. Just my $0.02

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Old 03-03-2015, 10:17 AM   #5
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Oil is not Oil. Filters that fit-are not always the best.

Get "exactly" the right filter , recommended by the engine manufacturer ( they are often the same, but marketed by different suppliers, like Napa-etc). Engine manufacturer will recommend what to use.

Get the best oil you can get-and keep using the same brand.

Buy them wherever they are cheapest, but do not skimp or vary on quality.

Change them yourself- if at all possible-
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Old 03-03-2015, 11:38 AM   #6
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CJ-4 spec not mentioned so this oil is NOT appropriate for diesel engines.
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Old 03-03-2015, 03:46 PM   #7
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It would be interesting to find out who makes the in store brand, like Wal Mart's Super Tech. WM isn't making it, probably a big name company...but I use Rotella.
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Old 03-03-2015, 03:52 PM   #8
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CJ-4 spec not mentioned so this oil is NOT appropriate for diesel engines.
Yep...if you run your mouse over the pic of the container, the circular seal says "For Gasoline Engines"
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Old 03-03-2015, 04:14 PM   #9
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No store brand oils in my engine's, Gas or Diesel. NONE. But you can do as you wish.
I spent over $7000 more for my diesel engine, and will not try using anything that
did not come in it from the factory, but that's the way I think after 35+ years in the
Auto Industry. However your mileage may vary......
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Old 03-03-2015, 05:10 PM   #10
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Quote:
Originally Posted by jimcumminsw View Post
You spend the extra $$$$ for a diesel engine and now someone is considering a low cost oil for this very expensive outlay.

To me that is like installing a K&N filter on the engine just to save a penny. In the long run will the engine last the 300K + miles that a diesel engine is suppose to.

I will use a major brand oil and filter over store brand and inferior filters any day. They have to cut cost somewhere and quality is always the first thing too go. Just my $0.02

Jim W.
Jim, In my 55 + years working on these things I still do not under stand
being penny wise and pound foolish approach so many follow.
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Old 03-03-2015, 06:00 PM   #11
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Hi Ray,IN,
The link you provided lead me to an oil for gasoline engines. In the drop down box, there is no choice for a diesel engine. I'm confused. Gas or diesel engine, my vehicles get the same brand name oil from the beginning of their life until the end. The same for filters. Brand name all the way.
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Old 03-03-2015, 07:35 PM   #12
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I have a Gasser but still need to use oil .
I use Shell, in the MH.
I use Valvoline/High Mileage in the Toad.
I use Cenex in my 64, it has SL,SM, not too many Carrie it with those Letter's JMO<
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Old 03-03-2015, 07:56 PM   #13
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Nothing but name brand oil goes in my gasser. It works too hard to have questionable blood.
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Old 03-03-2015, 08:13 PM   #14
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It would be interesting to find out who makes the in store brand, like Wal Mart's Super Tech. WM isn't making it, probably a big name company...but I use Rotella.
Walmart's Super Tech oil is made by Exxon Mobil. I've been running their all synthetic oil in my Lexus since it was new--for the price of brand name dino oils.

Delo. Rotella and the popular brands of diesel oil are very inexpensive. That's why it's often run in off shore fishing boats--and any engine that doesn't have a catalytic converter. If there's no problem running it in the past, continue buying it for your diesel.

And you never want a K&N air filter on any diesel engine. They such so much harder than any gasoline engine (having high compression), and diesels suck dirt right through the oiled filter surface of a K&N.
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