Mobil 1 VS Royal Purple ?! Who wins !?!

Information on the naturally-aspirated KA24E and KA24DE engines.
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Re: (Reverend D)

Postby motorking » Fri Mar 05, 2010 1:10 am

Reverend D wrote:I have yet to see FRAM by name in any Heavy Duty truck parts center. I work for a Peterbilt truck dealer. As for popular filter names in the biz I see Baldwin, Donaldson, Fleetguard<<<OE for Cummins Engines, Wix and Napa Gold. Fram just doesn't show up. I worked for a Paccar dealer for about 5 years now. Sorry to dig up a zombie thread.
If you read the thread, we are OE on Mack. Have you ever heard of D+W Diesel? If your in the HD business I am sure you have. They sell tons of FRAM HD filters through five WD's. Use what you like, just dont slam my company for no reason. Watch out for our OMS technology in the HD market

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Postby Rev_D21 » Fri Mar 05, 2010 4:10 am

Then D+W and Mack are the only ones. And please tell me exactly where I slammed your company?

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Postby lbreevesii » Thu Mar 11, 2010 11:13 am

Boy this thread has gotten crazy!

motorking- I would like to learn more about filters. Send me some info to [email protected]

I used to use cheaper filters, then switched to pure 1 for an oil change and was amazed to see my oil looking almost brand new until my interval came up. I am always up for finding a cheaper product that outperforms.

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Re: Mobil 1 VS Royal Purple ?! Who wins !?!

Postby rinkevichjm » Mon Jan 09, 2017 3:50 pm

There is a youTube video that compares Royal Purple, Mobile 1, AMSOil, and Wallmart brand 5w-40 at ~-40 for flow out of the bottle into a clear container. They then have a second one (without RP) at -20C (-4F)
I don't think I'd like to use either 5w-30 synthetic Castrol, Shell, Royal Purple or WallMart below zero

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