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Old 10-12-2019, 03:59 PM   #1
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Oil change interval

How offer would you change ninteenquarts of Rotel!a in your C7 cat
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Old 10-12-2019, 04:16 PM   #2
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Which Rotella are you using ? Regular dino, part synthetic
or full synthetic ? Makes a BIG difference in the answer.
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Old 10-12-2019, 04:31 PM   #3
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I use Rotella T4 15/40
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Old 10-12-2019, 05:37 PM   #4
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My C12 holds 10 Gallons. I change every 12 months or 10,000 miles. CHEAP insurance plus the Oil Sampling. Don't forget the Oil Sampling
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Old 10-12-2019, 05:49 PM   #5
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I change my C7 annually or 5000 miles whichever comes first with Rotella T6...they say the heui pump needs clean oil so it is cheap insurance
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Old 10-12-2019, 07:01 PM   #6
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I use 19 quarts of delo 15-40 in my c7 change once a year Note my dipstick reads at the add mark with 19 quarts.
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Old 10-12-2019, 10:15 PM   #7
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I change my Cat C7 oil every 6,000 miles or once per year as Caterpillar recommends for my 2006 engine. I use Delco 15-40
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Old 10-12-2019, 10:23 PM   #8
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Delo 15-40 here. Just changed myself last week @the 1 year mark and only 2200 miles, which is the least I have driven in 6 years. Some years I have changed twice. It is cheap insurance for the heui.
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Old 10-13-2019, 07:42 AM   #9
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I usually changed the oil around 5000 miles, I installed an aftermarket oil pan which now holds 23 quarts so I go about 6000 miles now. This is synthetic diesel 5w 40. You want clean oil for the Huei pump.
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Old 10-13-2019, 09:26 AM   #10
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Type is relative to where you are located. Pure syn is a better choice for cold climates.
Not saying Dino oil isn't a good choice but not in cold climates due to the viscosity when things get frosty outside. HEUI pumps do not like "thick" oil. My experience has been that in climates less than 35F, hard starting can be present with Dino unless you use a block heater for 10-12 hours before hand. 5-7K is a smart choice for change frequency.
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Old 02-08-2020, 08:06 PM   #11
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Oil Change On Long Trip

Planning a 10K mile trip for later this year.


I would normally change the oil and filter on my 2006 Cat C7 at 6K-7K miles. Don't want to take it somewhere for an oil change during the trip. And I don't want to do a full oil change myself, while on the trip.


What do you think about this for keeping my HEUI pump happy? Fill it with Rotella T6 (full synthetic), and bring along a new oil filter and 2 extra quarts of oil. Change the filter, only, at 6K-7K miles, and replace the 2 quarts of oil?
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Old 02-08-2020, 08:12 PM   #12
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Quote:
Originally Posted by mcstrut View Post
How offer would you change ninteenquarts of Rotel!a in your C7 cat

I change my oil in my Duramax every 5k miles which works out to be 6 months average, Rotella T6. That said, I have sent in oil samples and the results show that I could exceed 10k miles between changes. It's nice to know my limits if I ever needed to go that far on a oil change.
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Old 02-08-2020, 08:31 PM   #13
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Fumoto Valve

Need a Fumoto valve to make my oil changes on my 2006 C7 easier. I want to have the Fumoto valve in my hand when I drain the oil.



Does anyone know what threads are on the drain bolt? According to Fumoto, they could be 3/4-16 or 18mm-1.5.
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Old 02-09-2020, 06:15 AM   #14
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Quote:
Originally Posted by dmevis View Post
Planning a 10K mile trip for later this year.


I would normally change the oil and filter on my 2006 Cat C7 at 6K-7K miles. Don't want to take it somewhere for an oil change during the trip. And I don't want to do a full oil change myself, while on the trip.


What do you think about this for keeping my HEUI pump happy? Fill it with Rotella T6 (full synthetic), and bring along a new oil filter and 2 extra quarts of oil. Change the filter, only, at 6K-7K miles, and replace the 2 quarts of oil?
Personally, I see very little, if any, benefits to only changing the filter.
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