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Old 09-27-2014, 09:23 PM   #1
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Does anyone have tips for changing oil on a ISC8.3 cummins?

I plan on doing my first oil change on my Tiffin DP with a Cummins ISC8.3 engine. Since I have not changed it before, I was looking for some tips on making it easier.

Since it takes 6.3 gal of oil, what is the easiest way to put in this much oil?
Any special funnels??
Has anyone installed a oil drain valve? I am thinking about this to allow me to switch drain pans so I don't end up wit all 6 gal in the same pan.
Like a Fumoto valve: Fumoto F 106 Engine Oil Drain Valve New | eBay

Thanks,

Dan
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Old 09-27-2014, 09:42 PM   #2
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I purchased a large funnel and rubber hose that would reach from the back of the motorhome to the fill hole. I have a step ladder that has a hole approx 2" in dia. in the top step, I place the funnel in hole in the top step and run the hose to the fill nozzle. I found a funnel that would slip into the hose tight and not leak. I purchase oil in 1 or 2 gal containers, which makes it easy to pour oil into the funnel and gravity flow into the engine.
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Old 09-27-2014, 10:26 PM   #3
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dan
i have the same engine.
before my first change, i bought a fumoto valve. when i changed it, i used a 10g rubbermaid box. mounted the fumoto at the end. the following changes were easy, poured into gallon empty containers directly.

i tried different funnels, never liked any. i found just pouring fresh oil from top fill inlet with oil jub side-way was the easiest.
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Old 09-27-2014, 10:43 PM   #4
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Darwin & Country fit,

Perfect...your advice really helps. This let's me get supplies ahead of time.

Thanks,
Dan
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Old 09-28-2014, 06:31 AM   #5
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the only thing - i bought a fumoto with long nipple so i connect a short hose to lead waste oil to empty jugs eirectly.
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Old 09-28-2014, 07:29 AM   #6
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the only thing - i bought a fumoto with long nipple so i connect a short hose to lead waste oil to empty jugs eirectly.

Now why didn't I think of that? Good idea!!
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Old 09-28-2014, 07:50 AM   #7
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Now why didn't I think of that? Good idea!!
Primarily because the "jugs" are not empty until long after the oil has drained??? And you will need a pan for the oil filter - then come the fuel filter(s) then greasing the chassis, then shortly after that comes SpeedCo (Google it)
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Old 09-28-2014, 08:20 AM   #8
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I agree w/ SpeedCo!
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Old 09-28-2014, 01:33 PM   #9
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I agree w/ SpeedCo!
Yes indeed Speedco
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Old 09-28-2014, 09:44 PM   #10
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what do you use Speedco for?

Quote:
Originally Posted by H. Miller View Post
Primarily because the "jugs" are not empty until long after the oil has drained??? And you will need a pan for the oil filter - then come the fuel filter(s) then greasing the chassis, then shortly after that comes SpeedCo (Google it)
Sorry, but I am missing the point on Speedco. What items would you have them service after you have changed all your own filters?

Dan
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Old 09-28-2014, 09:44 PM   #11
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My ISC 8.3 takes 21 quarts with filter. Has Cummins
made a change for 2014 that requires 25 quarts ?
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Old 09-28-2014, 09:48 PM   #12
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My ISC 8.3 takes 21 quarts with filter. Has Cummins
made a change for 2014 that requires 25 quarts ?
I am going by their spec sheet. It says 6.3 gal. But the service manual says to put in less oil, then add .95 qts and check the dipstick. Keep doing this until it reaches the correct level. Then make a note for next time.

Dan
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Old 09-28-2014, 10:17 PM   #13
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Quote:
Originally Posted by H. Miller
Primarily because the "jugs" are not empty until long after the oil has drained??? And you will need a pan for the oil filter - then come the fuel filter(s) then greasing the chassis, then shortly after that comes SpeedCo (Google it)

Sorry, but I am missing the point on Speedco. What items would you have them service after you have changed all your own filters?

Dan"


What H. Miller is referring to is that when you change your own fuel filters, you have some diesel to get rid of. If you use Speedco, then there is nothing you have to deal with.They will dispose of the old oil and the fuel in the old filters."

When I can go and get 2 fuel filters, coolant filter, oil filter, oil, and a chassis lube for under $250, all done in under an hour, it is worth it to me plus I get to go in the pit with the techs. and watch. You can also get an oil analysis if you want to.
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Old 09-28-2014, 10:52 PM   #14
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Another vote for SpeedCo. I used to pride myself in doing my own services but at the price SpeedCo is well worth it and a lot less hassle and mess.
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