[AT] Engine oil

[toma at risingnet.net]

Like Cecil, I am a 30w guy too. I am not fond of multi grade oils either. The fact that it defaults to the lower number when it breaks down, or if it doesn't get hot enough. I want to lubricate my engines with oil, not polymers.
My '93 F250 with the 5.8 calls for 10-30 which I have always used but recently it has been using a but of oil at 260,000 miles so I am changing it to 30w too. I had bad luck with 10-30 once in a GM 350 in a 2 ton truck. I had always run 30w in it and changed to 10-30, it developed a rod knock shortly thereafter.
It rarely gets below freezing here.
--
Sent from myMail for Android Saturday, 15 August 2020, 07:18PM -07:00 from Cecil Bearden  crbearden at copper.net :

>John I don't know what part of the country you are in, but here in hot 
>and humid Oklahoma, I use straight wt oils in everything built before 
>2000, and multigrade for the rest.  I studied this a ferw years ago and 
>what I learned was that multi grade is oil that has the wt of the lower 
>number with viscosity improversto make it test to the upper wt when 
>hot.  However, our older engines don't run as hot as these later 
>models.  The difference between 170 degrees and 200 is a lot when using 
>multigrade oils.   I changed the oil in my Ingersoll 250 cfm compressor 
>w/ 3/71 Detroit.  I used 15W50 Mystic, I have used this brand for 
>years.  It was ok in the winter, but when it was 90degrees outside, It 
>started knocking at idle, I couldn't hear it when running at load, so no 
>telling how much damage it may have done.  I replaced it with 40wt and 2 
>qts of Lucas oil and it sounds ok now.  Still starts in winter too.   I 
>think that if the water temp runs at 170, then straight wt oils are to 
>be used.  If ti is hotter than multigrade.  Here in the hot south, 10W 
>oils are just too thin to start with..
>Cecil
>
>
>
>On  8/15/2020 11 :57 AM, John Hall wrote:
> What this group needs (in my opinion) is a good farm equipment 
> discussion.
> Engine Oil--but wait, this isn't your ordinary oil discussion!!! Long 
> story short, I have a fleet of old gas powered working FARM 
> equipment--not talking about lawn equipment. We have always ran big 
> name brand oil. I switched from Exxon Super HDII about 3-4 years ago 
> because it was getting really hard to source. I switched over to 
> Chevron Dello 400 (both are 30W). The Dello is formulated for diesels, 
> but supposedly works in older gas engines. I now have 2 engines that 
> drink oil when being worked hard. My Farmall M can drop 2-3 qts in a 
> couple hours of pulling a cultimulcher--yet you don't really notice it 
> smoking. It does foul plugs. That work is a very heavy load. Also I 
> have a 3300 Deere combine that will drop a qt or so every truckload of 
> corn. Now I've only had this combine about 8 years and the oil 
> consumption just started about 3 years ago--I swear some days it is 
> worse than others. I really wonder if its the oil I'm using. I have on 
> hand some CaseIH low-ash oil I run in lawnmowers--considering putting 
> it in the combine for this fall. Supposedly the same stuff IH has been 
> selling for 40+ years. The cost is about $3-4 more a quart, so an 
> extra $25 to change oil. For the record, the rest of the gas powered 
> fleet doesn't run hard/long enough to notice a problem. The combine is 
> such a gas hog, can't help but wonder if its a fuel issue causing 
> dilution.
>
> What you guys think, worth a shot?
>
> John Hall
>
>
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