Recent Topics
How not to drain a pool.
by StevieC. 09/20/18 05:50 PM
Tranny fluid in Old Ferguson Tractor ?
by Rudy1999 250. 09/20/18 03:39 PM
New (old) car inbound
by BeerCan. 09/20/18 02:42 PM
Ford AWD PTU fluid always black
by Raven. 09/20/18 02:34 PM
PC not charging
by sleepery. 09/20/18 01:53 PM
Can alternators make noise?
by Benzadmiral. 09/20/18 01:21 PM
Pr 1970 Superbirds For sale - Barn Find
by user52165. 09/20/18 12:32 PM
Fram Ultra Air Filters
by StevieC. 09/20/18 12:20 PM
Change oil filter or not. Very low miles
by Martin10. 09/20/18 11:37 AM
Toslink optical audio cable (plastic) experience
by ffhdriver. 09/20/18 11:30 AM
A woman I work with wants an affair with me!
by Drew99GT. 09/20/18 11:08 AM
ACEA A5/B5 REQUIREMENTS
by Kjmack. 09/20/18 10:56 AM
Carolina Reaper hot peppers
by gman2304. 09/20/18 09:54 AM
New Fram air filter?
by irv. 09/20/18 09:15 AM
Any golf cart experts?
by HawkeyeScott. 09/20/18 09:15 AM
EU Subaru 2.5 FB engine oil
by IMPALA08. 09/20/18 08:16 AM
02 Focus head replacement
by Eric Smith. 09/20/18 08:08 AM
A5/B5 or A3/B3
by ka9mnx. 09/20/18 07:53 AM
2018 Mazda 3 2.5 Castrol or Mazda Moly
by mazdamonky. 09/20/18 07:44 AM
Newest Members
FarmerDude, Bman90, Alday714, Joephoto, tlelectric
66021 Registered Users
Who's Online Now
86 registered members (2013ecof150, 2002 Maxima SE, 28oz, 2015_PSD, 77GrandPrix, 53' Stude, 6 invisible), 1,638 guests, and 52 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums67
Topics290,724
Posts4,849,149
Members66,021
Most Online3,590
Jan 24th, 2017
Donate to BITOG
Previous Thread
Next Thread
Print Thread
Hop To
Page 1 of 2 1 2
Babied diesels #4664161
02/12/18 06:49 PM
02/12/18 06:49 PM
Joined: Nov 2009
Posts: 4,941
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 4,941
Houston, Texas
Are diesels supposed to be run hard? I've heard diesels will buildup carbon if they aren't run hard periodically. Although I'm not sure what that entails I can hit 1100 degrees without passing 10 pounds of boost on my truck.

Last edited by motor_oil_madman; 02/12/18 06:50 PM.

2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: Babied diesels [Re: motor_oil_madman] #4664171
02/12/18 07:08 PM
02/12/18 07:08 PM
Joined: Jul 2017
Posts: 1,292
Douglas County, Colorado
bigj_16 Offline
bigj_16  Offline
Joined: Jul 2017
Posts: 1,292
Douglas County, Colorado
Originally Posted By: motor_oil_madman
Are diesels supposed to be run hard? I've heard diesels will buildup carbon if they aren't run hard periodically. Although I'm not sure what that entails I can hit 1100 degrees without passing 10 pounds of boost on my truck.

Two stroke diesels really need to be run hard, or they absolutely will carbon up.

Re: Babied diesels [Re: motor_oil_madman] #4664223
02/12/18 07:58 PM
02/12/18 07:58 PM
Joined: Aug 2015
Posts: 1,112
BC Canada
Farmer Offline
Farmer  Offline
Joined: Aug 2015
Posts: 1,112
BC Canada
Originally Posted By: motor_oil_madman
Are diesels supposed to be run hard? I've heard diesels will buildup carbon if they aren't run hard periodically. Although I'm not sure what that entails I can hit 1100 degrees without passing 10 pounds of boost on my truck.


Where's your pyrometer location? If you sit in too high of a gear you can also create unnecessary heat; meaning you don't have enough boost to keep the temperature down.

Re: Babied diesels [Re: motor_oil_madman] #4664227
02/12/18 08:01 PM
02/12/18 08:01 PM
Joined: Nov 2009
Posts: 4,941
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 4,941
Houston, Texas
Pre turbo. I noticed that too. I can stick my foot in it and the temp will go down.

Last edited by motor_oil_madman; 02/12/18 08:02 PM.

2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: Babied diesels [Re: motor_oil_madman] #4664342
02/12/18 10:09 PM
02/12/18 10:09 PM
Joined: Dec 2016
Posts: 6,226
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 6,226
Waco, TX
Originally Posted By: motor_oil_madman
Pre turbo. I noticed that too. I can stick my foot in it and the temp will go down.


I think this usually means you should step down one ex turbine housing size.

Cummins/Holset turbos are weird metric. I dropped from a 14cm3 to a 12cm2 and it made a nice difference.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Babied diesels [Re: motor_oil_madman] #4664351
02/12/18 10:18 PM
02/12/18 10:18 PM
Joined: Nov 2009
Posts: 4,941
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 4,941
Houston, Texas
The turbo oulet is small on my truck. 2.44in if I remember


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: Babied diesels [Re: motor_oil_madman] #4664392
02/12/18 11:12 PM
02/12/18 11:12 PM
Joined: Dec 2013
Posts: 2,181
Fort Worth, Texas
clinebarger Offline
clinebarger  Offline
Joined: Dec 2013
Posts: 2,181
Fort Worth, Texas
You have a Variable Geometry Turbocharger.....This coupled with a lot of EGR Flow can make for some wacky EGT readings.


2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
2010 Toyota Corolla 2ZR-FE/Auto
Re: Babied diesels [Re: motor_oil_madman] #4664398
02/12/18 11:20 PM
02/12/18 11:20 PM
Joined: Dec 2013
Posts: 2,181
Fort Worth, Texas
clinebarger Offline
clinebarger  Offline
Joined: Dec 2013
Posts: 2,181
Fort Worth, Texas
I don't really trust post turbo EGT readings either. The whole point of monitoring it is so you don't melt a piston or drop a exhaust valve seat. Guessing with calculations is just that....Guessing!


2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
2010 Toyota Corolla 2ZR-FE/Auto
Re: Babied diesels [Re: motor_oil_madman] #4664423
02/13/18 12:21 AM
02/13/18 12:21 AM
Joined: Nov 2009
Posts: 4,941
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 4,941
Houston, Texas
Back on topic! Sheesh. Lol


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: Babied diesels [Re: motor_oil_madman] #4664430
02/13/18 12:32 AM
02/13/18 12:32 AM
Joined: May 2012
Posts: 5,365
Fort Lauderdale, FL
DoubleWasp Offline
DoubleWasp  Offline
Joined: May 2012
Posts: 5,365
Fort Lauderdale, FL
You still have your emissions? When I still had mine, my 7.5 6.7 would turn into more of a dog each day I drove it nice and easy.

Always got best fuel economy and power by making sure to stick my foot in it kind of regularly.

Might still be true. I don't know because I always stick my foot in it on the regular since I deleted.

Out turbine housings are too small. Notorious. Increasing the size is incredible for reducing drive pressure and EGT's, while taking on more power. Quite a few companies that punch them out to 66mm.


07 Lincoln Navigator M1 0w-40/FU
68 Charger R/T / Supercharged 440 VR1/DBL7349
07 Ram 3500 4x4 / Cummins 6.7 /DBL7349
17 Maserati GranTurismo Cabrio
Re: Babied diesels [Re: motor_oil_madman] #4664444
02/13/18 01:47 AM
02/13/18 01:47 AM
Joined: Mar 2017
Posts: 152
South Wales, UK
Bailes1992 Offline
Bailes1992  Offline
Joined: Mar 2017
Posts: 152
South Wales, UK
I had a 2015 Ford Focus 1.5TDCi which I owned myself. I put 66k on it using only BP Ultimate or Shell V-Power diesel, I nursed it from day one and never really gave it a hard time. It spent most of its life with me at 70mph with cruise control on. I even moved from the OEM 5w30 WSS-M2C913D oil and started using an ACEA C3 oil for blthe higher HTHS and less SAPS to clog the DPF and inlet manifold and run 5k OCIs

The car was forever having issues, stuttering, hesitation and dumping diesel into the oil.

I now have a company car. A 2016 Ford Focus 1.5TDCi which gets serviced every 12.5k, gets run on supermarket diesel and I beat the life out of the poor thing. It's quieter, faster and so far has been much more reliable!


'13 Suzuki Jimmny - '16 Dacia Duster 1.5DCi 4WD
'96 LR Defender 300TDi - '12 BMW 320d

Engine Oil - Fuchs Titan XTL GT1 5w40
Gearbox Oil - Fuchs Sintofluid 75w80
Diff Oil - Fuchs Sintopoid 75w90
Re: Babied diesels [Re: motor_oil_madman] #4664451
02/13/18 02:22 AM
02/13/18 02:22 AM
Joined: Dec 2013
Posts: 2,181
Fort Worth, Texas
clinebarger Offline
clinebarger  Offline
Joined: Dec 2013
Posts: 2,181
Fort Worth, Texas
Originally Posted By: motor_oil_madman
Back on topic! Sheesh. Lol


I will no longer post to any of your threads, I was trying to help...I have a lot of 6BT/ISB experience.


2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
2010 Toyota Corolla 2ZR-FE/Auto
Re: Babied diesels [Re: motor_oil_madman] #4664634
02/13/18 10:24 AM
02/13/18 10:24 AM
Joined: Oct 2015
Posts: 2,652
Balearic Islands , Spain
FordCapriDriver Offline
FordCapriDriver  Offline
Joined: Oct 2015
Posts: 2,652
Balearic Islands , Spain
Many mechanics, including some i know, when they get a diesel that is running rough in the shop still go out on the highway for about half an hour or 45 minutes and drive them hard, a.k.a revving them hard on each gear change, from what they tell me a lot of people just don't drive them hard or long enough and the EGR valves and DPFs clog up with soot.
Here in Spain Diesels account for over half of all cars, and people like to lug them around in high gear all day.


1975 Ford Capri II Ghia 3000 V6, - Shell Helix HX3 20W-50 w/ 20% Rimula R4X 15W-40 HDEO.

1988 Ford Escort Mk4 Xr3i Cabrio, - Shell Rimula R4X 15W-40, w/ 30% Helix 3 20W-50.
Re: Babied diesels [Re: clinebarger] #4665160
02/13/18 08:41 PM
02/13/18 08:41 PM
Joined: Nov 2009
Posts: 4,941
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 4,941
Houston, Texas
Originally Posted By: clinebarger
Originally Posted By: motor_oil_madman
Back on topic! Sheesh. Lol


I will no longer post to any of your threads, I was trying to help...I have a lot of 6BT/ISB experience.



No you're fine man, I just didn't want the thread to get side tracked talking about turbo chargers.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: Babied diesels [Re: FordCapriDriver] #4665519
02/14/18 08:56 AM
02/14/18 08:56 AM
Joined: Nov 2009
Posts: 4,941
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 4,941
Houston, Texas
Originally Posted By: FordCapriDriver
Many mechanics, including some i know, when they get a diesel that is running rough in the shop still go out on the highway for about half an hour or 45 minutes and drive them hard, a.k.a revving them hard on each gear change, from what they tell me a lot of people just don't drive them hard or long enough and the EGR valves and DPFs clog up with soot.
Here in Spain Diesels account for over half of all cars, and people like to lug them around in high gear all day.


Does that hold true for the older diesels too?


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Page 1 of 2 1 2

BOB IS THE OIL GUY® Powered by UBB.threads™