Another Question About Oil

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Apr 21, 2010 | 11:22 AM

snakedoc

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From: AL, Reform

Another Question About Oil

I run Rotella 15w-40. it is my DD so no pulling, how long between oil changes? the book says around 7k, is that to long?

Apr 21, 2010 | 11:31 AM

binuya

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From: Seattle

Quote:

Originally Posted by snakedoc

I run Rotella 15w-40. it is my DD so no pulling, how long between oil changes? the book says around 7k, is that to long?

Maybe it's possible. Your oil might shear down too low before that though.
Try doing an OA at 6k to know for sure.

Apr 21, 2010 | 11:51 AM

snakedoc

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From: AL, Reform

that is what i was thinking but wonted to confirm.

Apr 21, 2010 | 12:12 PM

binuya

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From: Seattle

My OCI is 5k. Last OA was at the lower end of the range on viscosity. Blackstone says to try taking it to 6k, but I prefer not to.

Apr 21, 2010 | 01:16 PM

miller_feed

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From: Grand Lake, La.

I change my oil using 15w-40 every 5,000 miles. I use my speedometer to know when to change my oil. When I hit 135,000 miles, it will be time to change my oil again.

Apr 21, 2010 | 01:19 PM

ron's power stroke

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From: White Mnt's,New Hampshire

oil test for my delo400 say 12k is a good ## and could go more ... i change it at 8k

Apr 21, 2010 | 01:25 PM

snakedoc

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From: AL, Reform

im right a 6k, got on me before i know it, will change. i have ax excel sheet with all of my recodes to keep me on it.

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Apr 21, 2010 | 02:35 PM

jt371

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From: Upstate NY

I use Rotella 15w40 and Blackstone told me I could go for 8-9k oci.

Apr 21, 2010 | 03:53 PM

#10

ron's power stroke

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From: White Mnt's,New Hampshire

Quote:

Originally Posted by binuya

That's impressive. I use Delo 400 as well. Do you have a bypass system? What does it show for viscosity at 8k?

no bypass 72.8 @ 8k miles it takes a good 1500 miles before the oil starts to darken....

Apr 21, 2010 | 07:38 PM

#11

F350-6

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From: Texas

Quote:

Originally Posted by miller_feed

I change my oil using 15w-40 every 5,000 miles. I use my speedometer to know when to change my oil. When I hit 135,000 miles, it will be time to change my oil again.

I do mine kind of like Rick, except I only change my oil when my speedometer says 0.

I change mine every 5,000 based on the odometer readings. Next up is 330,000

Apr 21, 2010 | 07:48 PM

#12

ron's power stroke

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From: White Mnt's,New Hampshire

Quote:

Originally Posted by F350-6

I do mine kind of like Rick, except I only change my oil when my speedometer says 0.

I change mine every 5,000 based on the odometer readings. Next up is 330,000

LOL Rick must have had too many miller lights today..or he has one very fast truck..

Apr 21, 2010 | 11:31 PM

#13

97haymachine

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i probably do it to much but i use rotela 15 40 ad i change my oil and air filter every three thousand miles

Apr 22, 2010 | 07:50 AM

#14

Izzy351

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From: Dallas-Ft. Worth

Quote:

Originally Posted by 97haymachine

i probably do it to much but i use rotela 15 40 ad i change my oil and air filter every three thousand miles

Seems a bit excessive to me. I run Rotella Syn 7-8k, and my 6637 gets changed around 12-15k. I now have a 6.0L air filter ***'y coming, so we'll see how that one works out.