post #1 of Old 09-09-2013, 04:55 PM Thread Starter
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2000 XJ Cherokee 
Join Date: Jul 2013
Location: Beaverton
Posts: 22
Anyone running delo in the 4.0?

I know rotella is a popular match for this engine but delo has more zinc more phosphorous and significantly more moly, boron and magnesium. Rotella does have a higher tbn and more calcium. I feel like most people choose rotella because it is easier to find/cheaper. Is there another reason to favor rotella over delo?

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post #2 of Old 09-10-2013, 05:01 AM
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1990 MJ Comanche 
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Location: Prescott
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It doesn't really matter. Filter choice is much more important than the choice between those 2 oils.

If you own a Renix Jeep, you'll want to check this out.

An index to over 30 write-ups can be found in the link below

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