premium diesel 50 cetane, worth it? - Chevy and GMC Duramax Diesel Forum
Alternative Fuels - Diesel - Additives - Lubricants Discussion of diesel, its various additives, oils, lubricants and alternative fuels IE: Bio-Diesel ect...

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post #1 of 26 (permalink) Old 11-19-2018, 04:47 AM Thread Starter
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premium diesel 50 cetane, worth it?

I can get 40 or 50 cetane fuel. yes the 50 is a bit more. my thoughts only;
does running 50 cetane help anything? maybe it burns cleaner, better for the EGR and DPF?
maybe it has better lubricity?
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post #2 of 26 (permalink) Old 11-19-2018, 05:50 AM
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Assuming this is from a fuel station that is moving adequate quantities of fuel I would opt for the premium diesel and see how your truck runs. This is based on my experiences driving a diesel VW since 2000. I feel that I normally pick up enough mileage to pay for the difference in fuel cost.
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post #3 of 26 (permalink) Old 12-30-2018, 05:29 AM
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^^^ as long as the fuel is fresh I'd use the premium.

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post #4 of 26 (permalink) Old 12-30-2018, 07:48 AM
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Ive never seen that Premium diesel available, but Id give it a try. What is the price difference?

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post #5 of 26 (permalink) Old 12-30-2018, 08:04 AM
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Quote:
Originally Posted by kcmusa View Post
I can get 40 or 50 cetane fuel. yes the 50 is a bit more. my thoughts only;
does running 50 cetane help anything? maybe it burns cleaner, better for the EGR and DPF?
maybe it has better lubricity?
EPA mandates U.S. diesel to have a minimum cetane of 40. IIRC, CA diesel has a higher cetane level. But also, many U.S. brands offer levels higher than the 40 minimum. Chevron is one, and the new Exxon formulation is touted as higher also. The higher the cetane number, the faster the fuel will ignite and the more completely it will burn, to a degree.
Cetane above 55 has no significant effect.
So yes, a cleaner, more efficient burn in the cylinder should affect MPG and with that, DPF extended regen intervals.
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post #6 of 26 (permalink) Old 12-31-2018, 06:35 AM
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Quote:
Originally Posted by Hook'em_Horns! View Post
EPA mandates U.S. diesel to have a minimum cetane of 40. IIRC, CA diesel has a higher cetane level. But also, many U.S. brands offer levels higher than the 40 minimum. Chevron is one, and the new Exxon formulation is touted as higher also. The higher the cetane number, the faster the fuel will ignite and the more completely it will burn, to a degree.
Cetane above 55 has no significant effect.
So yes, a cleaner, more efficient burn in the cylinder should affect MPG and with that, DPF extended regen intervals.
Do you know if the new Exxon formulation includes any Bio?

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post #7 of 26 (permalink) Old 12-31-2018, 07:44 AM
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Their ad is a generalization on the 'new' formula, one thing mentioned is lubricity, but don't know the bio content.

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post #8 of 26 (permalink) Old 01-30-2019, 07:16 PM
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Quote:
Originally Posted by Hook'em_Horns! View Post
Their ad is a generalization on the 'new' formula, one thing mentioned is lubricity, but don't know the bio content.
I think it's 5%
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post #9 of 26 (permalink) Old 01-31-2019, 04:30 AM
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I would try a tank of it and compare the fuel mileage to the "normal" stuff to see if there was enough MPG gains to justify the increased cost.

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post #10 of 26 (permalink) Old 01-31-2019, 05:10 AM
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I finally saw a station with Premium diesel available. There aer none locally

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