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#4563400 - 11/03/17 09:06 PM New Forum member - oil analysis question
TiffinRED Offline

Registered: 11/03/17
Posts: 1
Loc: Washington
ok, so this has likely been asked a million times. I have an ISB 6.7 360HP on a freightliner chassis. It has 360 hours on it, change oil every year at approximately 10000 miles as it is an RV. Has 19000 miles on the engine. All the oil analysis specs came back fine except copper which came back at 105 PPM. No lead or anything else just copper. No baseline because I didn't analyze the first oil change. So what should I be looking for going forward?

#4563410 - 11/03/17 09:15 PM Re: New Forum member - oil analysis question [Re: TiffinRED]
zeng Offline

Registered: 09/01/15
Posts: 2041
Loc: Malaysia
From the oil cooler , if there is one.
Btw, welcome

#4563477 - 11/03/17 10:49 PM Re: New Forum member - oil analysis question [Re: TiffinRED]
Scienceman Offline

Registered: 10/04/09
Posts: 2859
Loc: Earth

#4563487 - 11/03/17 11:14 PM Re: New Forum member - oil analysis question [Re: TiffinRED]
mbacfp Online   content

Registered: 09/02/15
Posts: 736
Loc: California
Nice rig. Have a super c as well (F550 chassis). Definitely sounds like oil cooler...not sure if that is high or not. Try To search for blackstone UOA for universal averages.
2014 F-550 PSD..........M1 Delvac ESP 5w-40 + OEM
2012 Mazda CX-9 3.7L V6
2012 Toyota Sienna LTD 3.5L V6
2003 Dodge Durango R/T 4x4 5.9L V8

#4563888 - 11/04/17 12:20 PM Re: New Forum member - oil analysis question [Re: TiffinRED]
BrocLuno Offline

Registered: 09/06/15
Posts: 5071
Loc: Kalifornia Kollective
That is your baseline. Look for flat or trending down. Any spike need to be investigated. 105 PPM is not all that high ...
Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.

#4564532 - 11/05/17 06:58 AM Re: New Forum member - oil analysis question [Re: TiffinRED]
redneck47441 Offline

Registered: 03/31/15
Posts: 27
Loc: Indiana
Are you using synthetic oil? I've seen several duramax UOA's running synthetic with high copper up to 800ppm. I believe its a chemical reaction caused by the synthetic, why I don't know.

#4564908 - 11/05/17 01:33 PM Re: New Forum member - oil analysis question [Re: TiffinRED]
bullwinkle Offline

Registered: 10/09/04
Posts: 7356
Loc: Cincinnati, OH, USA
Stick with the same brand & type, seems like switching brands can make this issue worse-otherwise, it'll likely subside with time.
06 Ram 3500 CTD 4X4(FG Venturi), 93 GMC C3500 6.2, 89 F-450 7.3, 98 XJ 4.0(XG8A), 05 xB(XG3600), 15 Transit 3.7, 03 Merc Grand Marquis 4.6 2V(XG2)

#4565070 - 11/05/17 04:17 PM Re: New Forum member - oil analysis question [Re: TiffinRED]
dnewton3 Offline

Registered: 05/14/07
Posts: 7307
Loc: Indianapolis, IN
19000 miles; 360 hours; averaging around 53mph. That's getting the engine up to temp and probably well seasoned. Not much idle time I can only deduce, or your average would be higher, and that's hard to accomplish in an RV.

Also, only your second oil change I guess? OCI every 10,000, and you're only at 19,000. Probably the Cu is just coming down from it's break in; likely oil cooler is a source.

Welcome to the site.
The act of preventative maintenance, in and of itself, is FAR MORE important than brand/grade/base choices among lubes and filters.
- under maintaining something is akin to abuse/neglect; that can kill equipment by shortening the lifespan
- over maintaining something has never been proven to be anything but a waste of time and money