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Oil looks black as night! normal?
05-05-2010, 10:08 AM
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#1
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Senior Member
Vintage RV Owners Club
Join Date: Jul 2009
Location: Beaverton, OR
Posts: 189
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Checked my oil level via dipstick yesterday. Oil and filters were changed exactly 9 months & 1,100 miles ago. Bus runs great and level looked good... just AMAZED how black it looked. Is this normal?
Engine = Caterpillar 3176 turbo (325 hp)
Oil pressure when warm @ speed approx. 43 lbs.
Oil analysis resulted positive (green check mark) all normal. (at time of oil change)
I'm kind of new to diesel engines but LOVE them!
When I change the oil in my nissan gas burner for months afterwards the oil still looks clean. I am dealing with a COMPLETELY different animal here aren't i?
__________________
fkloster = Fritz & Erin (& Lucy the Weim)
1991 Beaver Marquis 40' (1,225 ft. lbs. torque)
2011 JGC Overland Summit Toad / U.S Gear Brake
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05-05-2010, 10:19 AM
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#2
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Senior Member
National RV Owners Club Freightliner Owners Club
Join Date: Oct 2009
Posts: 1,560
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Black is normal. A diesel's oil will turn black after a short time.
__________________
2001 National Tradewinds 7370 300 Cat
2011 Jeep Wrangler Unlimited Sport
Officially fulltiming. The Journey Begins 
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05-05-2010, 10:29 AM
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#3
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Community Administrator
Newmar Owners Club
Join Date: May 2000
Location: Newark, DE
Posts: 13,896
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Black is good. It means the oil is removing contaminants.
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Adios, Dirk - '84 Real Lite Truck Camper, '86 Wilderness Cimarron TT, '07 DSDP, '11 Virtual RV
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05-05-2010, 10:43 AM
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#4
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Senior Member
Monaco Owners Club
Join Date: Mar 2000
Location: Woodburn Oregon USA
Posts: 1,372
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If you just change the oil, start it and let it run 10 minutes it will be just as black. This is normal for a diesel.
__________________
Brian, Loretta & Daisy (Golden Retriever)
2008 Holiday Rambler Endeavor 40 PDQ , ISL 400
2008 Ford Explorer toad
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05-05-2010, 11:18 AM
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#5
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Senior Member
Tiffin Owners Club
Join Date: Feb 2010
Posts: 180
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Yay, now I don't have to ask the question!
(  )
__________________
2000 40' Tiffin Allegro Bus \ 2003 Chaparral 260 SSI
1995 32 x 8 Party Cruiser pontoon FOR SALE
1988 53 x 14 Skipperliner Custom houseboat
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05-05-2010, 02:12 PM
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#6
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Senior Member
Vintage RV Owners Club
Join Date: Jul 2009
Location: Beaverton, OR
Posts: 189
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Thanks guys! I'm learning stuff every day. I LOVE THE BIG IRON DIESELS!
__________________
fkloster = Fritz & Erin (& Lucy the Weim)
1991 Beaver Marquis 40' (1,225 ft. lbs. torque)
2011 JGC Overland Summit Toad / U.S Gear Brake
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