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Old 06-05-2015, 06:52 AM   #15
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Newmar Owners Club
Spartan Chassis
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I'm not familiar with your 1999 Diplomate so I might be asking a silly question but...

Are you looking for a recommendation on the Scan Gauge II (gas) for a Scan Gauge D (Diesel)?

I had one for my gasser and now for my DP. I liked them both but never bothered with the fuel calculations. Too much slop for me. I use an app to track fuel mileage based on fuel put in the tank and miles driven.

I use the SG primarily to monitor in a digital format my water temp, tranny fluid temp, HP and Load. The water and tranny temps are much easier for me to monitor than the needle gauges and I just use my coach's capabilities to "guesstimate" average and instant fuel mileage between fueling stops. Even if you went through the whole process of calibrating the SG for fuel consumption, if you run your generator on the same fuel as your motor it throws off any method (SG or manual) of calculating MPG anyway.

Don, Sandee & GSD Zeus. Guardian GSDs Gunny (7/11/15) & Thor (5/5/15)
2006 DSDP 4320, Spartan MM IFS, 2013 CR-V, Blue Ox Avail, SMI AF1, Samsung 197R Refer.
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Old 06-05-2015, 07:06 AM   #16
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Ford Super Duty Owner
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I love mine. Now if I could only get my grand child and great grand child (both three years old) to not play with the switches.

1998 Pace Arrow 35 ft. F53 Ford V10 2012 Honda Civic toad
32 years mechanic at Delta Air Lines 15 year motorhome service manager. 3 popups....2 travel trailers....5 motorhomes....loved them all.
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Old 06-05-2015, 07:20 AM   #17
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If you want to save money, buy the ScanGage from Advanced Auto parts on-line. Use coupon code TRT41, and save $40 off of their $160 price.

I echo favorable comments above. Knowing your water, oil and tranny temps is a big deal, and that's just a small part of what the unit does for you.

Cheapest $120 I ever spent.
Rick and Sandy
2003 American Eagle, 52K miles
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Old 06-05-2015, 03:16 PM   #18
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What he just said. I got my D from Advance Auto Parts with the coupon. My tach bounces all over the place but I set the Scan gauge to show instant MPG, average MPG, water temp and rpm. Works for me. The coupon code TRT30 will get you 30% off of purchases over $50. That will get you to about $112.

Btw, don't waste you time looking for one of the apple or android apps that work with OBDII plugs. You don't have an OBDII plug, so you can't use those. The maker of the Torque app says that he is working on an J1939 translation for Torque but it hasn't happened yet. I had Torque set up on my last MH (gas) and I loved it. Wish I could use it on my diesel.
2005 Monaco Cayman 34PBB
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Old 06-05-2015, 05:38 PM   #19
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SG D here, love it.
Don, Mary and Spooky
'00 Bluebird Skoolie Conversion
Geo Tracker/Dodge Neon/Aprilia Scooter towed
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Old 06-05-2015, 05:47 PM   #20
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Ordered one last week. Looking forward to having accurate numbers to work from.
Our Windsor does the exact same thing, when the headlights go on, the temp goes up 20 degrees and the oil pressure changes also.
Something to do with the ground.
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Old 06-05-2015, 06:21 PM   #21
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I have one. For transmission temp monitoring.
Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.
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Old 06-05-2015, 07:39 PM   #22
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I corresponded today with a Scanguage rep via online chat trying to find out if my 2003 Workhorse W22 chassis with an Allison 1000 transmission reports trans temp to the ECU. She said that must be set up in order to get a trans temp readout on the Scangauge. Unfortunately, she couldn't tell me if the W22 chassis was set up that way.

Anybody know if I get the Scangauge II and plug it in to my 2003 gas Mountain Aire if I will be able to read transmission temp?

Jerry, Georgia (DW) and Bailey (yellow Lab)
2003 Mountain Aire 3778 8.1 L, Workhorse W-22
2015 GMC Canyon All Terrain 4 down
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Old 06-05-2015, 08:09 PM   #23
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I use one on my 2003 Winnebago Brave works great. I have it set to show water temp, trams temp, horse power, Amps. Great for peace of mine.

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Old 06-05-2015, 08:36 PM   #24
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Used a Scanguage for years, but now just in my pickup. In the motorhome I use an OBDI bluetooth plugin and TORQ android app on my tablet, I like it much better and easily customized it to my preferences.
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Old 06-06-2015, 08:05 AM   #25
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I just bought a Scanguage D, primarily to monitor tranny fluid temp, radiator water temp, oil pressure, and alternator charge voltage, because I didn't trust the dash gauges! So far so good! I bought it on Amazon for $139.95.

ScanGuage D?
Joe & Annette

2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
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Old 06-06-2015, 08:42 AM   #26
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Scanguage E is $99.95 Direct from Company-no freight to me

See if you can use that, I have one-just to turn out the light on my MB Sprinter
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Old 06-06-2015, 08:48 AM   #27
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In terms of importance [to me], I rank it up there with the PI PT50C. The ScanGuage-D was the second thing we bought for the MH. \ken
Ken & Deb (WIT Club, FMCA, SKP, Harvest Hosts, and grateful volunteers with SOWERs)
2005 Winnebago Vectra 40FD w/400ISL and Allison 3000MH on Freightliner's Evolution chassis, Onan QD7500, 1000w Renogy solar, BlueOx tow gear, and 2015 Cherokee TrailHawk toad.
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Old 06-06-2015, 04:46 PM   #28
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Thank you all so much. This is the first time I have posted on this site and you all are amazing! I hope in some way I can be a help to all of you in the future! Thanks again!

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