Go BottomEngine oil for tractor crude vs synthetic
 | guest
Join Date: Aug 2017 Posts: 0 
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1999-02-04 1007
I'm looking for some advise regarding engine oil for my diesel tractor. I currently use Shell rotella and was wondering if switching to mobile 1 (crude vs synthetic) would be to any advantage. I put about 100 hours a year on the tractor and change the oil and filters accordingly. Any suggestions or insight would be geatly appreciated. Thanks in advance for your help. Junior in NC
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| Rich
Join Date: Posts: 1
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1999-02-04 1009
I use Mobil 1 in everything I own. But, depending on your useage it might not be needed. Mobil 1 makes for much easier starting when the temps are cold (below 25F) because it doesn't thinken up like crude oils. Since I live in Michigan we get lots of cold weather and I feel that the extra protection and easier starting is worth the cost of Mobil 1. I also extend the oil change intervals in my cars to triple of what I would do with natural oils (7500 miles vs. 2500 miles). But in the tractor I follow the reccomended schedule. If you don't use the tractor much in cold weather, I wouldn't bother with Mobil 1 though. ....
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| SteveB
Join Date: Jun 2006 Posts: 0 TheSticks, OT
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1999-02-04 1011
Another thought. You didn't state how many hrs your machine has on it, but if you switch to syn you stand a very good chance of liberating all of the deposites that are currently residing in your engine. It can cause an increase in oil consumption as some of these varnish deposites are actually helping the rings maintain a good seal. We had an extensive discussion here in the office about synth vs. pet types of oil and change intervals. It all boils down to maintaining the correct change interval for the service conditions your engine sees. I change my cars oil at every 5k as my driving is not concidered to be in the severe catagory. My wifes van on the other hand gets changed every 3k because she does the short trip mom thing and that puts her vehicle in the extreme usage catagory. I would also clasify our tractors as being in the extreme catagory and think that as long as you comply with the oil grade requirements and change intervals recommended by the mfg you can't go to far from wrong. I would yeild to my friend from up north on the cold cranking issue though. A radiator hose heater also works wonders in that enviroment. Sorry if I got windy on that one. ....
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| guest
Join Date: Aug 2017 Posts: 0
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1999-02-04 1014
Steve, Why would syn. oil release varnish deposits? Why do varnish deposits make good ring seal and thus switching to syn. its going to burn oil. Also--what chemical is in syn. oil that causes your rings to release varnish deposits? Thanks Mike ....
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| SteveB
Join Date: Jun 2006 Posts: 0 TheSticks, OT
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1999-02-05 1020
It has to do with what is called the detergent action of the syn oil. It isn't an exclusive property of syn oil. The ring deal is usually in high time engines. Carbon,varnish build up behind the rings and actually help provide a seal even as the rings/ring groves/cyl wall wear. They you change to an oil that has a hi detergent action and it cleans those deposites out and you oil consumption goes up. Sometimes a little varnish is a good thing! I think the syn oils are really great, if you start using them after 10k or so (on the car now) after everything is broken in real well. I knew a guy who wasn't much of a gear head, called me over to look at his engine. He was concerned because you could look in the valve cover (thru the oil servicing hole) and there wasn't any varnish. I mean none. He was also concerned that the oil he took out looked just like the oil he was putting in, amber in color. He used syn from day one. I told him not to worry about it and just keep doing what he was doing. It was incredable. Those parts looked like they came right off the parts rack at the facory. ....
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| guest
Join Date: Aug 2017 Posts: 0
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1999-02-05 1028
If you decide to go the synthetic route and use Mobil 1 in your tractor (or any brand of oil for that matter), check your tractor manufacturer's recommended API ratings for motor oil to ensure Mobil 1 meets them before you switch. For example, if your tractor calls for oil with a CF-4 or CG-4 rating, Mobil 1 does not meet these requirements. If Mobil 1 doesn't meet your requirements, you can use another Mobil product, Delvac 1 (also 100% synthetic), which is the diesel equivalent of Mobil 1. You can get more info about Delvac 1 at Mobil's website (www.mobil.com). Good Luck :-)) ....
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| gary green
Join Date: Posts: 1
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1999-03-28 2111
JR. you can use the cheapest 15w40 oil you can buy and it will work just fine. ....
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| MichaelSnyder
Join Date: Jun 1999 Posts: 0
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1999-07-16 6026
Lets all run the cheapest crap we can find, like Gary says, Then, when the manufacture won't replace the pre-maturely worn engines, because we didn't run an oil that meets the spec's of the manufacturer, we can all send him the bills. Sorry, but I paid $4500 just for My 24v B5.9 Cummins, and can only imagine that it would cost more if I had to replace it. This engine specifically calls for a CF or CG-4 grade oil. Which has been specified due to the sliding tappets in the 24v engine. Most 15-40 oils at time of posting do not carry this certification. The oil makers are currently making the necessary changes to meet specification. FYI, AMSOIL's 5-30 & 15-40 needed no alterations to pass the certification withflying colors I might add. Sorry for my vision, but Gary reminds me of the guy who never has any money for lunch, because he's penny wise and dollar foolish. Here's a perfect example.. ....
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