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11-11-2016, 05:49 PM
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#1
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Bus Geek
Join Date: May 2016
Location: Eastern WA
Posts: 6,401
Year: 2002
Coachwork: Bluebird
Chassis: All American RE (A3RE)
Engine: Cummins ISC (8.3)
Rated Cap: 72
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Oil questions for Cummins ISB 8.3
Hey Everyone,
I will be headed down to pick up my Bluebird shortly. It has always been my practice to carry spare belts, filters and oil when on the road. This trip will be no different.
My concern is regarding oil.
I just found out that I will not be picking the bus up at the service shop but at the State surplus center instead. If I was picking up at the service shop I would simply ask what oil they were using and get some of that.
As I will not have that information available I am concerned that I don't know if they were running dino or synthetic and what weight. If I buy Rotella 15-40 and they have been running some flavor of synthetic will I cause a problem if I add oil?
Any thoughts?
Thanks.
S.
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11-11-2016, 06:30 PM
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#2
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Bus Nut
Join Date: Mar 2015
Location: hills of sw virginia
Posts: 889
Year: 1996
Chassis: thomas
Engine: 8.3 cummins
Rated Cap: 11 window
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if its topped off its all good, if it needs oil get an oil change. save some of the old oil and get it tested when you get home, it will tell you what type of oil it was and what condition your motors in. good luck
Blackstone Labs
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11-11-2016, 06:37 PM
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#3
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Bus Geek
Join Date: May 2016
Location: Eastern WA
Posts: 6,401
Year: 2002
Coachwork: Bluebird
Chassis: All American RE (A3RE)
Engine: Cummins ISC (8.3)
Rated Cap: 72
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Quote:
Originally Posted by superdave
if its topped off its all good, if it needs oil get an oil change. save some of the old oil and get it tested when you get home, it will tell you what type of oil it was and what condition your motors in. good luck
Blackstone Labs
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Thanks for the input.
My concern is if I have to add oil on the trip home. I may be adding a significantly different oil.
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11-12-2016, 10:42 AM
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#5
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Bus Geek
Join Date: May 2016
Location: Eastern WA
Posts: 6,401
Year: 2002
Coachwork: Bluebird
Chassis: All American RE (A3RE)
Engine: Cummins ISC (8.3)
Rated Cap: 72
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Quote:
Originally Posted by jazty
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Thank you!! Good info!
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11-12-2016, 12:15 PM
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#6
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Bus Nut
Join Date: Sep 2016
Location: Chapel Hill, NC
Posts: 855
Year: 2002
Coachwork: Blue Bird
Chassis: All American
Engine: Cummins 8.3/Allison MD3060
Rated Cap: 84
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I wouldn't hesitate at all to top it off with Rotella if I didn't know what was in it.
And just to help you avoid any confusion at parts counters, etc... The engine you have is an ISC. The Cummins ISB is a 3.9, 5.9, or 6.7.
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11-12-2016, 12:55 PM
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#7
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Bus Geek
Join Date: May 2016
Location: Eastern WA
Posts: 6,401
Year: 2002
Coachwork: Bluebird
Chassis: All American RE (A3RE)
Engine: Cummins ISC (8.3)
Rated Cap: 72
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Quote:
Originally Posted by Rameses
I wouldn't hesitate at all to top it off with Rotella if I didn't know what was in it.
And just to help you avoid any confusion at parts counters, etc... The engine you have is an ISC. The Cummins ISB is a 3.9, 5.9, or 6.7.
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Thanks for pointing out my typo
Mechanical
6C=8.3
6B=5.9
4B=3.3 & 3.9
Electronic
ISB=5.9/6.7
ISC=8.3
I have not seen an electronic 3.3 or 3.9???
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11-12-2016, 06:17 PM
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#8
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Bus Nut
Join Date: Sep 2016
Location: Chapel Hill, NC
Posts: 855
Year: 2002
Coachwork: Blue Bird
Chassis: All American
Engine: Cummins 8.3/Allison MD3060
Rated Cap: 84
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Quote:
Originally Posted by PNW_Steve
Thanks for pointing out my typo
Mechanical
6C=8.3
6B=5.9
4B=3.3 & 3.9
Electronic
ISB=5.9/6.7
ISC=8.3
I have not seen an electronic 3.3 or 3.9???
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Yeah, the electronic 16 valve 3.9 was only made for a couple years and is pretty damned rare.
They were used in generators, pumps, and construction equipment (mostly Case loaders).
They stopped making them and replaced them in the applications they'd been using them for with either the 3.3 or 4.5 (also both electronic) depending on how much power was needed. Reason behind that change was something to do with the new engines falling into different emissions categories than the 3.9 did.
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11-13-2016, 08:46 PM
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#9
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Bus Geek
Join Date: May 2016
Location: Eastern WA
Posts: 6,401
Year: 2002
Coachwork: Bluebird
Chassis: All American RE (A3RE)
Engine: Cummins ISC (8.3)
Rated Cap: 72
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Quote:
Originally Posted by Rameses
Yeah, the electronic 16 valve 3.9 was only made for a couple years and is pretty damned rare.
They were used in generators, pumps, and construction equipment (mostly Case loaders).
They stopped making them and replaced them in the applications they'd been using them for with either the 3.3 or 4.5 (also both electronic) depending on how much power was needed. Reason behind that change was something to do with the new engines falling into different emissions categories than the 3.9 did.
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Interesting stuff!!
One of these days when I get the time...... I would love to build a 4BT powered rat rod. Too many hobbies....
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11-13-2016, 10:57 PM
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#10
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Bus Nut
Join Date: Sep 2016
Location: Chapel Hill, NC
Posts: 855
Year: 2002
Coachwork: Blue Bird
Chassis: All American
Engine: Cummins 8.3/Allison MD3060
Rated Cap: 84
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Quote:
Originally Posted by PNW_Steve
Interesting stuff!!
One of these days when I get the time...... I would love to build a 4BT powered rat rod. Too many hobbies....
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That would be AWESOME.
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11-14-2016, 10:18 AM
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#11
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Bus Geek
Join Date: Mar 2011
Location: Houston, Texas
Posts: 8,462
Year: 1946
Coachwork: Chevrolet/Wayne
Chassis: 1- 1/2 ton
Engine: Cummins 4BT
Rated Cap: 15
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There are a bunch of really nasty 4BT Rats out there...check'em out!
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11-14-2016, 11:36 AM
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#12
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Bus Geek
Join Date: May 2009
Location: Columbus Ohio
Posts: 18,751
Year: 1991
Coachwork: Carpenter
Chassis: International 3800
Engine: DTA360 / MT643
Rated Cap: 7 Row Handicap
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I just saw what I think was one this weekend in st pete... Old dodge pickup.. maybe earky 50s, lowered.. it was either a rat oir in process.. looked more like it was in process.. was a diesel with 2 mean little stacks in the bed.. sounded like a 4 banger so likely a 4BT?
-Christopher
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