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AC7060IL 
Orange Level
Joined: 19 Aug 2012
Location: central IL
Points: 3511
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 Posted: 08 Aug 2019 at 8:26am |
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Acquired a 1978 gas engine that would run lower oil pressure with multi viscosity 10w-40 oil. Dealership advised to run straight 30w oil, which immediately raised oil pressure. It’s still running great today on 30w. Any new parts guy at Napa will usually stare at me oddly, when I ask for a case of 30w oil.
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Stanley
Bronze Level
Joined: 16 Oct 2009
Location: PDC, WI
Points: 193
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Posted: 26 Aug 2019 at 12:54pm |
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I have a 6140 w/ the 3 cylinder diesel engine. I intend to use straight 30wt, but do I use non-detergent? It's a 1982.
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Stanley
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Joined: 16 Oct 2009
Location: PDC, WI
Points: 193
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Posted: 26 Aug 2019 at 1:03pm |
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I have a 1982 AC 6140 w/ the 3 cylinder diesel engine. I intend to use a straight 30w oil. Should I use a non-detergent?
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DougS
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Joined: 03 Nov 2011
Location: Iowa
Points: 2490
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Posted: 26 Aug 2019 at 1:37pm |
 Stanley wrote:
I have a 1982 AC 6140 w/ the 3 cylinder diesel engine. I intend to use a straight 30w oil. Should I use a non-detergent? |
Yikes no. Run a modern high quality motor oil. I see you're near PDC. I'd run a multi-vis oil too. Definitely not SAE 30 when the temperature is below 32. What does the manual say? I'm guessing that it wants 10W-30 or 15W-40.
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HoughMade
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Joined: 22 Sep 2017
Location: Valparaiso, IN
Points: 706
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Posted: 26 Aug 2019 at 1:58pm |
I use Rotella conventional 15W40 in my 2 tractors, all my small engines and used to run it in my '79 Yamaha motorcycle.
For any diesel or older gas engine, I would recommend it.
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1951 B
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Ray54
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Joined: 22 Nov 2009
Location: Paso Robles, Ca
Points: 4708
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Posted: 26 Aug 2019 at 3:33pm |
Stanley wrote:
I have a 1982 AC 6140 w/ the 3 cylinder diesel engine. I intend to use a straight 30w oil. Should I use a non-detergent? |
Grandpa bought a Cat diesel tractor in 34, with the dealer being able to bring other customers around to show off the new diesel engine. Started burning oil right from the start. Not what Caterpillar company or the dealer wanted,or grandpa for that matter. Was the newest high tech of the day, but unproven at the time. The bolts about learned to unscrew themselves they had that engine apart so many time. After new rings, then pistons and rings,and finally sleeves,pistons,and rings and a brand new oil with detergent it ran without oil consumption.
The detergent oil was developed to help remove the carbon and other by products of burning low grade fuel, that we know today as diesel fuel.If ever a engine needed detergent oils its diesels.
Will not get into the straight or multi weight oil argument. But have been convinced by a engine machest that we don't need as much oil pressure to keep a engine going as we generally think.
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Stanley
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Joined: 16 Oct 2009
Location: PDC, WI
Points: 193
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Posted: 26 Aug 2019 at 5:09pm |
Actually the manual says not to use a multi vis oil. I mainly use the tractor for brush hogging, so I thought a straight 30w would be ok. Don't use it during winter pos.
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DougS
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Joined: 03 Nov 2011
Location: Iowa
Points: 2490
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Posted: 26 Aug 2019 at 6:07pm |
bigal121892 wrote:
Dad bought the combine used from the local dealer, we got it home, changed all of the fluids, and put 15W40 in it just like we had in everything else. Combine used two gallons of oil the first day. Called dealer, (thinking we were sold a combine with a bad engine) dealer said drain the 15W40 out, and put straight 30W in. Did that, and the combine would use a quart every 100 hours until it was traded 3 years latter. |
Two gallons in a day? He would have almost had to be dumping a quart in every hour. How much was it smoking?
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DougS
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Joined: 03 Nov 2011
Location: Iowa
Points: 2490
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Posted: 27 Aug 2019 at 6:02am |
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Higher oil pressure does not mean higher oil flow. The last thing I want at startup is high oil pressure. That means the thick oil isn't reaching the upper parts of the engine fast enough. Detergent or non-detergent shouldn't make any difference as far as oil consumption is concerned with a new engine. Non-detergent may give you higher oil pressure as the engine ages. This is because the ports may be starting to clog. Cheap oil may make a difference. The cheap stuff may be vaporizing much faster. Every engine is different, especially during the break-in period. Testimonials don't mean much to me unless I know every circumstance of the conditions when the oil pressure or consumption was noted.
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WF owner
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Joined: 12 May 2013
Location: Bombay NY
Points: 4979
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Posted: 27 Aug 2019 at 6:53am |
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I can see no reason to use anything different than what the manufacturer recommends in the owners manual. These companies hire engineers to develop engines. Many have different oiling systems (like the new high flow systems that have been around in cars for ~ 15 years). Why would anyone think they know more than the engineers that designed the engine???
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HoughMade
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Joined: 22 Sep 2017
Location: Valparaiso, IN
Points: 706
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Posted: 27 Aug 2019 at 9:09am |
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It's not about knowing more. It's about modern lubricants being much better than anything the engineers dreamed of 30 or more years ago. That being said, stick with the recommended viscosity, more or less, but if a manual recommends 10 in the winter and 30 in the summer, that's essentially what you are giving it with a modern 10w30 which is a far superior oil than 10w30 was in 1960 whatever.
Edited by HoughMade - 27 Aug 2019 at 9:10am
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1951 B
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nella(Pa)
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Joined: 11 Sep 2009
Location: Allentown, Pa.
Points: 3117
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Posted: 27 Aug 2019 at 9:41am |
festus51 wrote:
I might get the evil eye from some people , but I got tired of stocking multiply oils for all the different engines I have. Quite a few years ago I started putting 15-40 diesel oil in every thing. Pick ups, car, tractor diesel engines. gas engines , motorcycle, lawn mower .sure simplifies oil buying. I figure it is a step above gas engine oils with high detergents plus the higher pressures of diesel engine. I have had no problems yet knock on wood. |
X 2
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DougS
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Joined: 03 Nov 2011
Location: Iowa
Points: 2490
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Posted: 27 Aug 2019 at 12:29pm |
HoughMade wrote:
It's not about knowing more. It's about modern lubricants being much better than anything the engineers dreamed of 30 or more years ago. That being said, stick with the recommended viscosity, more or less, but if a manual recommends 10 in the winter and 30 in the summer, that's essentially what you are giving it with a modern 10w30 which is a far superior oil than 10w30 was in 1960 whatever. |
This. I'll put up any of today's diesel rated 10W-30 diesel rated motor oils up against any SAE 30 motor oil of 25 years ago for that diesel engine. Hands down todays oil is superior. The old single viscosity oil was the only way they knew how to build an oil with sufficient film strength. The old advertisement where they said that 80 percent of engine wear occurs in the first 10 minutes of warmup was true. You need to get your oil circulating as fast as possible.
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steve(ill)
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Joined: 11 Sep 2009
Location: illinois
Points: 87090
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Posted: 27 Aug 2019 at 7:13pm |
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Like them all, but love the "B"s.
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GM Guy
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Joined: 31 Jul 2012
Location: NW KS / S.C. ID
Points: 1985
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Posted: 28 Aug 2019 at 11:17pm |
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For those that reference the manual for recommendations, a first year 7060 book warns against using multi-vis oils, but a last year 7060 book approves them.
What do you do then? ;)
I run Mobil Delvace 1300 super 15w40 in everything of mine with a diesel engine.
My road pickups that are around little dust and put enough miles on that extended intervals can save some $ get full synthetic 5w40. Ben running Valvoline but I just scored a deal on some Mobil delvac ESP 5w40, so its going in next.
A seasoned mechanic told me once that he sees more issues caused by improper cooling system servicing (electrolosis, etc. ) than he does engine oil caused faults.
We get all wound up about what oil to use, but dont seem too concerned about the 15 year old antifreeze in the radiator...
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Gleaner: the properly engineered and built combine.
If you need parts for your Gleaner, we are parting out A's through L2's, so we may be able to help.
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DougS
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Joined: 03 Nov 2011
Location: Iowa
Points: 2490
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Posted: 29 Aug 2019 at 7:23am |
GM Guy wrote:
For those that reference the manual for recommendations, a first year 7060 book warns against using multi-vis oils, but a last year 7060 book approves them.
A seasoned mechanic told me once that he sees more issues caused by improper cooling system servicing (electrolosis, etc. ) than he does engine oil caused faults.
We get all wound up about what oil to use, but dont seem too concerned about the 15 year old antifreeze in the radiator...
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Let's start a which antifreeze is best thread. :) Actually back in the good old days you could mix and match antifreeze brands. Now you have to break out your color compatibility chart, lest you create a brown slush in your coolant. When an antifreeze company posts that their product is "compatible with all other antifreezes", it ain't necessarily true. Things are different from what they were 25+ years ago.
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