Average oci using synthetics?

Messages
26
Location
California
Hello y'all, here in southern calif. mine is between 6000-7000 miles, using oem filter. My truck is used for deliveries, but with a lot of freeway miles. Thanks for all input.
 
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Messages
40,713
Location
Great Lakes
Average may not be that useful if your driving patterns differ from others. This is when you do that UOA to figure out what the safe OCI is in your case.
 
Messages
211
Location
Sta Catarina, Br
I do 5k (plus 5k) each time. Change at 10k. Decantation in between. 2 steps: 1) 5k decantle; 2) take the previous decanted and put more 5k on it and recycle at the end. New charge of fresh and start over again ... Just don't rely on filters, even new they aren't up to the task.
 
Messages
7,485
Location
S California
Originally Posted By: Rosetta
I do 5k (plus 5k) each time. Change at 10k. Decantation in between. 2 steps: 1) 5k decantle; 2) take the previous decanted and put more 5k on it and recycle at the end. New charge of fresh and start over again ... Just don't rely on filters, even new they aren't up to the task.
?
 
Messages
1,019
Location
Va
Depends on vehicle, conditions, driver. On the Legacy I run ~4k oci. (severe service oci is 3750, btw.) I'll run the "full factory oci" of 7.5k on the fozz with synthetic. Boxster gets changed by time, not milage, as miles never get high enough to factor. Dumped 9.2qs of Castrol 5w-40 with 2500 miles on it this spring...
 
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Messages
1,164
Location
Fresno, CA
Originally Posted By: gregk24
Average for me...3000 miles. 3000 miles of 5 or less mile trips. So it takes a while.
But you keep the filter on for 2 OCIs right? I'm averaging around 6500 miles per OCI on synthetic on the Honda and 3500 miles per OCI on the Acura.
 
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Messages
2,081
Location
Los Angeles, California
Originally Posted By: tacoguy714
Hello y'all, here in southern calif. mine is between 6000-7000 miles, using oem filter. My truck is used for deliveries, but with a lot of freeway miles. Thanks for all input.
tacoguy714, In my 08' Impala SS and 2013 Camaro/RS I always go by my OLM monitor and so it indicates for me to do my OCI's every 6K. By the time I reach that mileage figure it'll take most of the year anyways and my manual tells me to change it regardless every 12 months. Durango
 
Messages
3,561
Location
Central Iowa
My 2013 Silverado with a 5.3L, when the OLM gets below 10%, which is roughly 7500 miles, give or take. The 2006 Jeep Liberty diesel, 11,000 miles. The Detroit Series 60 in my semi, 22,500, which is 50% over normal OEM recommended drain interval on that engine. Thinking of going to 25K since samples look good. Detroit grants allowance over the standard Series 60 15K interval to 22,500 if a 93K218 spec'd oil is used. Mine meets that. Will run the next one to 25K and see how it looks.
 
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