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1985 Dodge Ram 225 Slant 6 Rotella T4 2600k #4629568
01/09/18 07:00 PM
01/09/18 07:00 PM
Joined: Mar 2017
Posts: 30
AL
Backwoods41695 Offline OP
Backwoods41695  Offline OP
Joined: Mar 2017
Posts: 30
AL
Hi, guys. Here's my second UOA on the Dodge. Surprisingly insolubles went way down this time. This engine is kind of dirty inside from sitting for so many years. So I've been doing short intervals to clean it out. Let me know what you guys think!


2007 Ford F-150 5.4L 3V
Motorcraft Synth Blend 5W-20

1985 Dodge Ram D100 225 Slant 6
Shell Rotella T4 15W-40
Re: 1985 Dodge Ram 225 Slant 6 Rotella T4 2600k [Re: Backwoods41695] #4629575
01/09/18 07:06 PM
01/09/18 07:06 PM
Joined: Mar 2015
Posts: 10,784
In the shop
53' Stude Offline
53' Stude  Offline
Joined: Mar 2015
Posts: 10,784
In the shop
I think it looks great. Keep on using the Rotella 15w40 and thanks for posting smile


09' Camry LE, 141,020 miles

PP 5w30 and TG 4967
Re: 1985 Dodge Ram 225 Slant 6 Rotella T4 2600k [Re: Backwoods41695] #4629631
01/09/18 07:46 PM
01/09/18 07:46 PM
Joined: Sep 2009
Posts: 16,002
OH
fdcg27 Offline
fdcg27  Offline
Joined: Sep 2009
Posts: 16,002
OH
Nice UOA from this old dear.
I would imagine that these things typically shed metal at rates that would make a Honda owner blanch, and Blackstone seems to agree.
Also, kudos to you for being unafraid to use a grade that suits your climate.
These things probably called for 10W-30 but a 15W-40 HDEO is fine for the temperatures that you see.
From a cleaning point of view, though, this oil has only a normal PCMO dose of calcium and but a smidge of mag.


17 Forester 12K MSS 0W-20
12 Accord LX 92K PP 5W-20
09 Forester 95K M1HM 10W-30
01 Focus ZX3 118K PP 5W-20
96 Accord LX 104K T5 10W-30
95 318i
Re: 1985 Dodge Ram 225 Slant 6 Rotella T4 2600k [Re: Backwoods41695] #4629633
01/09/18 07:47 PM
01/09/18 07:47 PM
Joined: Dec 2016
Posts: 6,226
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 6,226
Waco, TX
The slant 6 was all the way up until 1985?

Definitely a tough engine...


"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: 1985 Dodge Ram 225 Slant 6 Rotella T4 2600k [Re: Backwoods41695] #4629663
01/09/18 08:11 PM
01/09/18 08:11 PM
Joined: Jan 2008
Posts: 10,662
OH
SatinSilver Offline
SatinSilver  Offline
Joined: Jan 2008
Posts: 10,662
OH
Use some Engine Oil Flush at the end of your next short OCI. CRC, Motor Medic, etc available at Walmart. Just pour it in a warm/hot engine, idle it for 5 mins or so. Drain out, etc...works like magic. smile

Re: 1985 Dodge Ram 225 Slant 6 Rotella T4 2600k [Re: Backwoods41695] #4629710
01/09/18 08:34 PM
01/09/18 08:34 PM
Joined: Sep 2015
Posts: 5,839
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 5,839
Kalifornia Kollective
I'd run a can of BG109 for the last 100 miles and then change. It'll clean nicely and it's not there for the whole OCI smile


Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: 1985 Dodge Ram 225 Slant 6 Rotella T4 2600k [Re: Linctex] #4629815
01/09/18 10:16 PM
01/09/18 10:16 PM
Joined: Nov 2004
Posts: 1,800
SD
zrxkawboy Offline
zrxkawboy  Offline
Joined: Nov 2004
Posts: 1,800
SD
Originally Posted By: Linctex
The slant 6 was all the way up until 1985?


'87, actually


"Think of all the Ford owners who will someday want an automobile." John Dodge

Re: 1985 Dodge Ram 225 Slant 6 Rotella T4 2600k [Re: Backwoods41695] #4629872
01/09/18 11:36 PM
01/09/18 11:36 PM
Joined: Sep 2015
Posts: 2,256
Malaysia
zeng Offline
zeng  Offline
Joined: Sep 2015
Posts: 2,256
Malaysia
Metal wear rate is good.
OCI could be extended to 5k or more.

Re: 1985 Dodge Ram 225 Slant 6 Rotella T4 2600k [Re: Backwoods41695] #4630031
01/10/18 08:11 AM
01/10/18 08:11 AM
Joined: May 2007
Posts: 7,507
Indianapolis, IN
dnewton3 Offline
dnewton3  Offline
Joined: May 2007
Posts: 7,507
Indianapolis, IN
I suspect that the higher metals in the first UOA are from long-term corrosion from inactivity.
The insoluble count will also include some of the muck/stuff that's getting flushed out; hence the improvement.
These two relatively short OCIs are flushing out the old stuff.
I expect it will settle even a bit further with use, presuming the use continues in a more normal fashion and does not sit for long periods.
The FP is a tad low and fuel a tad high; probably due to carb'd engine. No harm; just an observation.

If you're going to operate it with reasonable consistency, then I'd agree longer OCIs can be done; try 5k miles next time.

These old slant-six engines are incredibly hard to kill; they just keep running and running and running and ...


Last edited by dnewton3; 01/10/18 08:13 AM.

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
Re: 1985 Dodge Ram 225 Slant 6 Rotella T4 2600k [Re: dnewton3] #4630295
01/10/18 11:54 AM
01/10/18 11:54 AM
Joined: Mar 2017
Posts: 30
AL
Backwoods41695 Offline OP
Backwoods41695  Offline OP
Joined: Mar 2017
Posts: 30
AL
Thanks for the replies, everyone! I think the fuel dilution and low FP may be related to how long I warm up the engine on cold mornings. When I start it, I let it run a good 15 minutes to let the cab get toasty on the inside and all that time with the choke on is probably to blame.

Now that the insolubles have taken a dive for the better, I'll start extending my intervals longer now. I honestly never thought my wear numbers would be this good on this truck, but I'm glad I was wrong.


2007 Ford F-150 5.4L 3V
Motorcraft Synth Blend 5W-20

1985 Dodge Ram D100 225 Slant 6
Shell Rotella T4 15W-40
Re: 1985 Dodge Ram 225 Slant 6 Rotella T4 2600k [Re: Backwoods41695] #4630512
01/10/18 02:35 PM
01/10/18 02:35 PM
Joined: May 2012
Posts: 5,363
Fort Lauderdale, FL
DoubleWasp Offline
DoubleWasp  Offline
Joined: May 2012
Posts: 5,363
Fort Lauderdale, FL
Good results out of this leaning tower of power.


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: 1985 Dodge Ram 225 Slant 6 Rotella T4 2600k [Re: zrxkawboy] #4630823
01/10/18 08:16 PM
01/10/18 08:16 PM
Joined: Oct 2012
Posts: 1,211
Rabbit Creek, Alaska
jayg Offline
jayg  Offline
Joined: Oct 2012
Posts: 1,211
Rabbit Creek, Alaska
Originally Posted By: zrxkawboy
Originally Posted By: Linctex
The slant 6 was all the way up until 1985?


'87, actually



On trucks in Mexico through 91 I think


17 Ram 1500 Ecodiesel- RT6 5w40
'15 Prius C Napa 0w20
'73 240Z 10w30 VWC from '73
'73 Triumph Tiger 750 M1 5w50
'67 BSA 441 Victor Special M1 5w50




Re: 1985 Dodge Ram 225 Slant 6 Rotella T4 2600k [Re: 53' Stude] #4631105
01/11/18 08:08 AM
01/11/18 08:08 AM
Joined: Jul 2015
Posts: 4,624
Down Under
SR5 Offline
SR5  Offline
Joined: Jul 2015
Posts: 4,624
Down Under
Originally Posted By: car51
I think it looks great. Keep on using the Rotella 15w40 and thanks for posting smile

Exactly, report looks good, low iron wear metals, keep using the Rotella T4 15W40.
I like the old slant six engines.


Penrite Vantage 10W40 SN & A3/B4 + Wesfil-Cooper Z154
Re: 1985 Dodge Ram 225 Slant 6 Rotella T4 2600k [Re: Backwoods41695] #4634044
01/13/18 10:21 PM
01/13/18 10:21 PM
Joined: Jan 2009
Posts: 1,306
Watertown, New York
cronk Offline
cronk  Offline
Joined: Jan 2009
Posts: 1,306
Watertown, New York
My parents had a 1985 Dodge truck with a slant 6 as well. It was the farm truck. A 2wd "Prospector" edition, with a 4 speed standard shift.
It was a pretty tough truck. What I learned to drive stick on!


2008 Ford F350
2003 Chevy Cavalier
2011 Nissan Quest
1986 Pontiac Trans Am
1940 Ford 9N Tractor
Amsoil lubes and filters!
Re: 1985 Dodge Ram 225 Slant 6 Rotella T4 2600k [Re: cronk] #4634080
01/13/18 11:13 PM
01/13/18 11:13 PM
Joined: Mar 2017
Posts: 30
AL
Backwoods41695 Offline OP
Backwoods41695  Offline OP
Joined: Mar 2017
Posts: 30
AL
Originally Posted By: cronk
My parents had a 1985 Dodge truck with a slant 6 as well. It was the farm truck. A 2wd "Prospector" edition, with a 4 speed standard shift.
It was a pretty tough truck. What I learned to drive stick on!

These engines definitely are tough. This one is the D100 "Custom" with a TorqueFlite automatic. It was my Grandad's old truck. I put it on the highway at 75 quite a bit with no issues. Gonna run her till she quits! If that happens, I'll be rebuilding the engine.


2007 Ford F-150 5.4L 3V
Motorcraft Synth Blend 5W-20

1985 Dodge Ram D100 225 Slant 6
Shell Rotella T4 15W-40
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