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Most Frequently Asked Questions About Operating Systems Here you will find some of the most frequently asked questions about the operating systems on a 'Bird. If you have one that you think should be added place it in here.

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  #1  
Old 10-26-2015
PetKos PetKos is offline
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Default Proper Engine Oil

Hi,

I am looking for a recomendation and /or a cconfirmation here. The bus dealer that i am buying my coach from said that the best engine oil to use is straight 40wgt for the 8V-92 detroit diesel. Now my truck mechanic in Maryland suggested 15-40 instead.

So I am asking here on what you all use in your 8v-92 motors?

Cheers,

Peter
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1993 Wanderlodge
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  #2  
Old 10-26-2015
Joatha Joatha is offline
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Location: Marietta
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Quote:
Originally Posted by PetKos View Post
Hi,

I am looking for a recomendation and /or a cconfirmation here. The bus dealer that i am buying my coach from said that the best engine oil to use is straight 40wgt for the 8V-92 detroit diesel. Now my truck mechanic in Maryland suggested 15-40 instead.

So I am asking here on what you all use in your 8v-92 motors?

Cheers,

Peter
There's a LOT of threads on this topic. You will find that there is a unanimous recommendation to use 40W in an 8V92. Series 60 or Cummins can use 15W-40. But, you should most certainly use 40W in an 8V92.
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  #3  
Old 10-26-2015
PetKos PetKos is offline
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Thanks...
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1993 Wanderlodge
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  #4  
Old 10-26-2015
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sfedeli sfedeli is offline
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Yes, definitely STRAIGHT 40-weight. You can get it from the Detroit Diesel shops in your area if no one else has any.
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  #5  
Old 10-26-2015
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yesmar yesmar is offline
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Also make sure the 40 weight is for 2 cycle Diesel engines.

For instance Delo 100 is for 2 cycle and Delo 400 is not recommended for 2 cycle

NAPA has the correct oil in 5 gallon pails that is reasonable. Wish I had the number
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  #6  
Old 10-26-2015
PetKos PetKos is offline
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In my KW, GMC and Peterbilt i could go about 12000 miles between oil changes.I'm thinking that in this new bird I could do it between 6-8000 miles. What do you all do?

peter
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  #7  
Old 10-26-2015
Machineman Machineman is offline
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Mobil Delvac 1240 in 40wt is the oil the Detroit dealer sells under the Detroit name.
I got mine through Winward Petroleum ( they are in the Northeast I see you are in CT)
If it's a new to you bird I would get enough to do a full change and dump the bulk oil tank then fill it with a known quality oil.. Who knows what the previous owner did.
5000 miles max or oil sample tests. My Grampa used to say that oil is cheaper than parts.
I'm a oil change freak.
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Freeport, Maine
1992 Wb40
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  #8  
Old 10-26-2015
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patticake patticake is offline
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If I remember correctly, the factory recommends once a year or 15000 miles, which ever comes first. If you have the "blue box", it should have the information listed, or look up 2 stroke detroit diesel.
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  #9  
Old 10-26-2015
markusfmeyer markusfmeyer is offline
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Quote:
Originally Posted by PetKos View Post
In my KW, GMC and Peterbilt i could go about 12000 miles between oil changes.I'm thinking that in this new bird I could do it between 6-8000 miles. What do you all do?

peter
I get my oill tested and change it annually. I average 5-8k miles a year. I buy it in 6 gallon pails from Texas refinery.
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  #10  
Old 10-26-2015
dennis hight dennis hight is offline
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I change mine annually or 6000 miles I have been using shell rotella t 40 w. It still has a cf2 rating . If you read the threads cf2 is outdated rating . As I understand it's about ash content due to piston heat because 2 stroke Pistons fire every stroke and have less time to cool. I'm sure there is a more scientific explanation but I'm a backhoe guy. Dennis
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