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Unread 07-26-2014, 10:23 AM   #1
sshaughn
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Biodiesel and oil change intervals?

On the 2014 jeep grand cherokee diesel it states oil intervals at 10,000 miles or 8,000 if running biodiesel. My question is should I follow the same guidelines with my 2008 if using biodiesel? Thanks in advance

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Unread 07-26-2014, 10:24 AM   #2
sshaughn
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I'm running b20 and using 5w-40
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Unread 07-26-2014, 12:20 PM   #3
scootr29
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What does VM put has the highest level of biodiesel? B20?

On my 2014 ML350 the max Bio is B5 and they do not print an alternate oil change interval.

On page 344 of the Jeep owners manual it does state B5 is ok....no reduction in oil change interval for that.

My concern for high levels of biodiesel would be future issues with the SCR catalyst and the DPF. There are also oil dilution issues so the oil does lose some of its properties over time...that is why VM is asking customers to drop from 10,000 to 8,000 miles. I would also consider changing the oil filter at least once a year

Me personally....and I work for one of the largest diesel engine manufacturers I have adjusted my oil change interval on my CRD to 5,000 miles because there is no way to guarantee what biodiesel blend you are getting at any of the diesel pumps across America. It could range from B0 to B20. You have no way of knowing.
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Unread 07-26-2014, 01:27 PM   #4
sshaughn
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Yeah, VM states if you use b6-b20 then drop oil change intervals from 10,000 to 8,000.
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Unread 07-26-2014, 04:20 PM   #5
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Quote:
Originally Posted by sshaughn View Post
Yeah, VM states if you use b6-b20 then drop oil change intervals from 10,000 to 8,000.
Like I said...I adjusted my oil change interval down....we have a company in Greenville here that has stickers on its pumps that state the biodiesel could be anywhere between B5 and B20....pretty big range for me. I also know they supply other stations in the area.
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