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Old 05-09-2021, 11:48 AM   #1
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Changing brand of engine oil?

I know that all of us favor one brand of oil over all others. Mine is valvoline. I was looking at Sam's club and noticed they carry Mobil oil for diesel. It's a pretty significant savings if I was to switch. It's $34 a case for 4 gallons. I change oil yearly regardless of miles. Would this be a bad thing to do? Click image for larger version

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Old 05-09-2021, 02:02 PM   #2
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As long as the oil meets your engine requirements you should be good to go!
My last oil change was with Costco brand diesel oil.
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Old 05-09-2021, 02:19 PM   #3
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Personally I don't think there is a hill of beans worth of difference between the major brands of oil so long as the oil meets your motor's spec. The biggest difference is between conventional oil and synthetic oil. I know a number of high performance engine builders and all of them use full synthetic oil. I take their advice. Good oil is cheap insurance for expensive engine damage. Your coach, your call.
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Old 05-09-2021, 02:38 PM   #4
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Mobil Delvac brand (in oil and other fluids for diesels) is a well known and trusted brand. I happen to use Rotella T5 synthetic blend in mine (use the same in my genset), but wouldn't hesitate to use Delvac. As others have said, as long as it meets the specs, you're good to go.
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Old 05-09-2021, 03:27 PM   #5
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When I was a teen, I worked in a automotive repair shop. Both the other mechanic and I would do oil changes and let the cans drip into a large container for a several days after we emptied them. By the time either of us needed to do an oil change on our own car, we had enough "Heinz 57" oil for the job. Never an issue.
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Old 05-09-2021, 03:32 PM   #6
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Quote:
Originally Posted by arcaguy View Post
Personally I don't think there is a hill of beans worth of difference between the major brands of oil so long as the oil meets your motor's spec. The biggest difference is between conventional oil and synthetic oil. I know a number of high performance engine builders and all of them use full synthetic oil. I take their advice. Good oil is cheap insurance for expensive engine damage. Your coach, your call.
This pretty much covers it. All oil sold today has to meet certain SAE specs. for the use it's intended for. The difference is about as important as the difference between a blonde, brunette or redhead. The package might look different but they are all the same on the inside.
I would recommend you change your oil more often than wives or girlfriends though. It's a lot cheaper.
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Old 05-09-2021, 04:48 PM   #7
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Thanks for all the replies. Going to switch over to the Mobil. Keep a little change in my pocket.
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Old 05-09-2021, 06:19 PM   #8
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Thanks for the heads up on the oil. Very good price. I use to use that oil, but my son scored a bunch of very low price oil when fram bought shelf space at an auto parts store. Im just about out of oil.
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Old 05-09-2021, 06:49 PM   #9
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Quote:
Originally Posted by Dutch Star Don View Post
When I was a teen, I worked in a automotive repair shop. Both the other mechanic and I would do oil changes and let the cans drip into a large container for a several days after we emptied them. By the time either of us needed to do an oil change on our own car, we had enough "Heinz 57" oil for the job. Never an issue.
My brothers and I used to do the very same thing back in the 60's!!! Even after all these years I still have to clean the windshield after a fill up!
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Old 05-09-2021, 07:19 PM   #10
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Quote:
Originally Posted by Dutch Star Don View Post
When I was a teen, I worked in a automotive repair shop. Both the other mechanic and I would do oil changes and let the cans drip into a large container for a several days after we emptied them. By the time either of us needed to do an oil change on our own car, we had enough "Heinz 57" oil for the job. Never an issue.
LOL, that brings back memories!

Station I worked at had a oil trough as well. Back in the days when you opened a can of oil with a can opener.
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Old 05-10-2021, 05:24 PM   #11
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I use the cheapest oil at walmart because the least expensive oil now is better than what was available 20 years ago when my coach was built
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Old 05-10-2021, 08:37 PM   #12
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I'm not very particular about oil brands. One thing I do like about Mobil is that they publish a list of exactly what specifications and approvals their various engine oil actually meet. Clearly. In writing, no messing about. It's called the "Mobil Oil Product Guide". I'd link to it, but it always comes up as a PDF document you have to download to read.
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