<div dir="ltr"><div dir="ltr">Hi Carl:<div><br></div><div>Interesting article (thanks Cecil).</div><div><br></div><div>The article hits the concerns of water and temperature as it relates to hydraulic systems. Not sure you can boil that down to "...the only difference between the two types of oil has to deal with water issues in the system..."<br></div><div><br></div><div>It says that engine oil has a tendency to emulsify (absorb/hold in suspension) water; hydraulic oil does not. It says this is a reason not to use engine oil in hydraulic systems unless specified by the manufacturer. In hydraulics, you generally want the water to separate, not to be emulsified and carried around the system.<br></div><div><br></div><div>I suspect lubricity differences as well, but the article does not mention this. My reason: links provided earlier in this discussion (to Traveller ISO 46, I *think*) brought up specifications warning against the use of hydraulic oil in transmissions, differentials, etc. Sounds like it lacks extreme-pressure additives common in engine and especially gear oils.</div><div><br></div><div>SO</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Nov 5, 2019 at 10:27 AM <<a href="mailto:szabelski@wildblue.net">szabelski@wildblue.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Thanks Cecil, very interesting article.<br>
<br>
If I read this right, the only difference between the two types of oil has to deal with water issues in the system. Since you can’t control the amount of water that might be introduced into the belly pump, using hydraulic oil could be an issue when using it in the belly pump. Don’t know if this really is an issue or not, but maybe that’s why the manuals say to not use hydraulic oils (cavitation, part wear).<br>
<br>
I did some more looking on line last night and ran across some articles dealing with engine oils and hydraulic oils. Most of them go into the history of oils, all the way from the first non detergent single weight oils up the the multi grade oils, and into synthetics. Seems to be a consensus that a lot of misunderstanding exists as to whether or not you need to use single weight or multi weight oils in engines and such. They also addressed things like viscosity at different temperatures, especially with multi grade oils, since this is apparently also misunderstood a lot.<br>
<br>
I also ran across two sources of 20W-20 oil, both natural and synthetic. These were from Kendall and Mystic, and were considered to be hydraulic oils from their websites. Also noted that the prices were 2-1/2 to 5 times the price I payed for the 20W Traveller oil.<br>
<br>
Since I’m good for now, and since I’m not in a real hurry to put this issue to bed, I’m going to keep looking into it over the winter as time allows.<br>
<br>
Thanks to all those who spent time delving into this question.<br>
<br>
Carl<br>
<br>
----- Original Message -----<br>
From: Cecil Bearden <<a href="mailto:crbearden@copper.net" target="_blank">crbearden@copper.net</a>><br>
To: <a href="mailto:at@lists.antique-tractor.com" target="_blank">at@lists.antique-tractor.com</a><br>
Sent: Mon, 04 Nov 2019 23:38:25 -0500 (EST)<br>
Subject: Re: [AT] 20w Oil<br>
<br>
<br>
Explanation of hydraulic and motor oils used for hydraulics.<br>
<br>
<a href="https://www.machinerylubrication.com/Read/29715/hydraulic-engine-oils" rel="noreferrer" target="_blank">https://www.machinerylubrication.com/Read/29715/hydraulic-engine-oils</a><br>
<br>
Cecil<br>
<br>
<br>
<br>
On 11/4/2019 10:25 PM, <a href="mailto:bradloomis@charter.net" target="_blank">bradloomis@charter.net</a> wrote:<br>
><br>
> Curiosity killed this cat! Google eventually got me this:<br>
><br>
> <a href="http://shconline-com.3dcartstores.com/20-Non-det-Motor-Oil_p_7869484.html?gclid=EAIaIQobChMIpuCKy5rS5QIVcRh9Ch3SNQUUEAQYASABEgIBcvD_BwE" rel="noreferrer" target="_blank">http://shconline-com.3dcartstores.com/20-Non-det-Motor-Oil_p_7869484.html?gclid=EAIaIQobChMIpuCKy5rS5QIVcRh9Ch3SNQUUEAQYASABEgIBcvD_BwE</a><br>
><br>
> Compressor oil = 20w motor oil. $3.29 a quart. Who knew. Not much <br>
> else. I took a quick peek at the Chevron site as that is what we used <br>
> at the wine factory. I’ve dumped in a ton of ISO 46 & 68 regular and <br>
> food grade into equipment but never thought of them being a <br>
> replacement for motor oil. The air compressors all used ISO 68 as <br>
> lubricant, at least the 150 and 200 HP ones.<br>
><br>
> Brad<br>
><br>
> *From:* AT <<a href="mailto:at-bounces@lists.antique-tractor.com" target="_blank">at-bounces@lists.antique-tractor.com</a>> *On Behalf Of <br>
> *Spencer Yost<br>
> *Sent:* Monday, November 04, 2019 7:42 PM<br>
> *To:* Antique Tractor Email Discussion Group <br>
> <<a href="mailto:at@lists.antique-tractor.com" target="_blank">at@lists.antique-tractor.com</a>><br>
> *Subject:* Re: [AT] 20w Oil<br>
><br>
> Having been down this road I am positive ISO 46 or 68 hydraulic oils <br>
> are direct substitutes for 20W<br>
><br>
> Good luck!<br>
><br>
> Spencer<br>
><br>
> Sent from my iPhone<br>
><br>
><br>
><br>
> On Nov 4, 2019, at 10:30 PM, Mike M <<a href="mailto:meulenms@gmx.com" target="_blank">meulenms@gmx.com</a><br>
> <mailto:<a href="mailto:meulenms@gmx.com" target="_blank">meulenms@gmx.com</a>>> wrote:<br>
><br>
> Traveller *Hydraulic Oil ISO 46* (SAE 20 Equivalent) is a high<br>
> quality *hydraulic oil* that is specifically formulated to protect<br>
> against rust, corrosion, foaming, oxidation and meets or exceeds<br>
> the requirements for industrial and mobile *hydraulic* systems.<br>
><br>
> Mike M<br>
><br>
> On 11/4/2019 8:51 PM, <a href="mailto:drgerber@bright.net" target="_blank">drgerber@bright.net</a><br>
> <mailto:<a href="mailto:drgerber@bright.net" target="_blank">drgerber@bright.net</a>> wrote:<br>
><br>
> I have been using the 30W non detergent from TSC in my 2cyl hydraulics for years. A little stiff in the winter but after a few minutes it warms up just fine. Can't say I've ever seen straight 20W non detergent.<br>
><br>
> Dave Gerber<br>
><br>
> -----Original Message-----<br>
><br>
> From: AT<<a href="mailto:at-bounces@lists.antique-tractor.com" target="_blank">at-bounces@lists.antique-tractor.com</a>> <mailto:<a href="mailto:at-bounces@lists.antique-tractor.com" target="_blank">at-bounces@lists.antique-tractor.com</a>> On Behalf Of John Hall<br>
><br>
> Sent: Monday, November 4, 2019 6:58 PM<br>
><br>
> <a href="mailto:To%3Aat@lists.antique-tractor.com" target="_blank">To:at@lists.antique-tractor.com</a> <mailto:<a href="mailto:at@lists.antique-tractor.com" target="_blank">at@lists.antique-tractor.com</a>><br>
><br>
> Subject: Re: [AT] 20w Oil<br>
><br>
> We run 30W in the M here, works fine. I don't use it in cold weather, if that matters.<br>
><br>
> John Hall<br>
><br>
> On 11/4/2019 6:17 PM,<a href="mailto:szabelski@wildblue.net" target="_blank">szabelski@wildblue.net</a> <mailto:<a href="mailto:szabelski@wildblue.net" target="_blank">szabelski@wildblue.net</a>> wrote:<br>
><br>
> I used to buy Travellers 20W non detergent oil for the H belly pump from Tractor Supply. Now they don’t carry it anymore and I haven’t see it anyplace else. I haven’t even seen anybody else’s brand of 20W oil. Does anybody know if they quit making it? TS still carries 10W and 30W non detergent oil from Travelers, just not the 20W.<br>
><br>
> I’ll be using 10W-30W non detergent for the winter, so not having any 20W isn’t an issue.<br>
><br>
> Thanks, Carl<br>
><br>
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</blockquote></div></div>