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Old 09-25-2013, 12:31 PM   #11
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Re: My first oil change

[quote="bapos"]If your filter screws in vertically .... you may want to prefill it either half way full or part of the way. It just helps with dry starts. If its horizontally then don't worry about it. quote]
I know a few people who pre fill their filters but we learned in school to never pre fill filters. You never want to send un filtered oil through your engine.
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Old 10-06-2013, 03:58 PM   #12
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Re: My first oil change

Not sure how sending brand new oil out of a bottle through a system would be a bad thing? Last time I checked pumping an oil pump dry is not good either? Some oil filters hold a lot of oil. My 366 gasser has a 2 quarts of oil and it vertical so it makes sense to me to prefill it?
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Old 10-06-2013, 04:04 PM   #13
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Re: My first oil change

If its vertical, I would pre-fill it.
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Old 07-18-2017, 02:17 PM   #14
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How often to change oil?

How often would you recommend changing the oil on a diesel bus engine?
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Old 07-18-2017, 04:36 PM   #15
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Ask the local dealer for your make of engine.
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Old 07-18-2017, 05:17 PM   #16
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mileage between changes is determined mostly by the mileage interval. second, some go by testing... for example, i normally go one yr before changing fluids as i dont drove more than 4k miles in that time. On the other hand, my dad always changed all the otr trucks on weekly basis but of course he sold oil so always had 100 bbls of it for sale...
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Old 07-18-2017, 06:49 PM   #17
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Originally Posted by Jarlaxle View Post
It's a 5.9 Cummins, so it probably uses about 4 gallons of oil. (My buddy's Bird has the same motor & uses 16 quarts.) It should use a standard oil filter...looking up a same-year diesel Ram should get you the right one. Oil will be 15W-40, whatever you can get the cheapest will work.
I would go to Cummins Quickserve and look up how much oil and what filter Cummins recommends. It can vary between light duty and medium duty applications.

As for oil, I would suggest that the "cheapest" is not allways the best. I would suggest looking for the best buy on a name brand oil that meets Cummins spec. I am currently running Rotella in my 5.9. Walmart sells 5 gallon pails for $64.
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Old 07-18-2017, 07:10 PM   #18
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I run rotella T and do 6000 mile drains with a 3000 mile filter change..
Navistar says 6000 miles for both oil and filter on standard oil...

I havent hit a tims constraint as I drive the busses quite a bit.
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Old 07-19-2017, 04:14 PM   #19
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Originally Posted by roach711 View Post
Check out the Fumoto drain valves.
It took a while, but allow me to be the first to show appreciation for sharing this wonderful-looking product. I wouldn't be able to justify the purchase for smaller vehicles, but for buses with oil pans holding in the upwards of 28 L, being able to drain one gallon at a time will be a godsend.
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Old 07-20-2017, 09:47 AM   #20
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This is SUCH a great community. Thanks for following up!
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