is synthetic oil bad? - Ford Powerstroke Diesel Forum
 
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post #1 of 6 Old 02-01-2008, 05:22 PM Thread Starter
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is synthetic oil bad?

I had heard that running synthetic oil in a diesel engine isn't good for it cause it doesn't have the organic compounds that remove carbon deposits from a diesel. Is this true? I know lots of people run syn, but i am ready for an oil change and i wanted to run syn. I just wanted to see what you guys thought about that.

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post #2 of 6 Old 02-01-2008, 05:41 PM
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been running it in my 00 ex for about 20k,had no problems,seems easier to start in am,maybe a little better fuel mileage i run 5w40 rotella

Last edited by lamarmathis; 02-01-2008 at 06:01 PM. Reason: additional info
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post #3 of 6 Old 02-01-2008, 05:43 PM
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I have ben running Amsoil synthetic oil for 20+ yrs now. Have 45,000 hrs on a 855 Cummins, and 47,000hrs on a 4bd1 Izuzu, Had valve covers off both engines recently and they still look new . No by-pass filter and 1000hr oil changes. Both engines are getting a little tired now, but thats a lot of hrs!

I'm a believer in synthetic!

2000 Excusion , 125,000 mi
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Drill some treehuggers on the way to some oil

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post #4 of 6 Old 02-01-2008, 05:43 PM Thread Starter
If it aint a CAT itsa DOG

 
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Thats why i want to use it is for better mpg and easier winter starts.

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post #5 of 6 Old 02-01-2008, 05:44 PM
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I run Amsoil 15W40 in mine and it runs better and makes better mileage plus it's in there for a year. I also run thier filter its as good as a cat filter.

2006 crew cab XLT, Fx4 6.0 stroke, torqe shift trans, deleted EGR, Turn over ball GN.
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post #6 of 6 Old 02-01-2008, 05:44 PM
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I'm about to find out, gonna try Amsoil on my next change

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