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Post by Rockoonz on Jan 4, 2022 10:49:09 GMT -5
AzRockGeek that is 20W motor oil, so ISO68. That is really thick, and it will have additives to hold the solids in suspension for a oil filter instead of them settling to the bottom like you want. The Portland club shop used a ISO32 tractor oil for awhile to save money, saw blade life expectancy definitely dropped and degreasing slabs was a chore. If I was using an alternative I would prefer the horse laxative, I believe the low viscosity stuff is about ISO15, so still on the heavy side but also a pure oil that will help the mud settle to the bottom and stay there.
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Post by Peruano on Jan 4, 2022 11:33:05 GMT -5
A slight automotive smell is enough to put me off. Horse laxative makes my hands soft and has no odor to my aged nose.
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NDK
Cave Dweller 
Member since January 2009
Posts: 9,440
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Post by NDK on Jan 5, 2022 16:46:40 GMT -5
I got something similar, same price when I built my saw. I believe it's 303 hydraulic oil. It's water thin (or close to it) and seems to work well enough. I don't mind the odor and wanted something cheap because my saw is completely home built and didn't want $300 in oil if the build was a failure 🤣 |
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realrockhound
Cave Dweller
Chucking leaverite at tweekers
Member since June 2020
Posts: 4,499
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Post by realrockhound on Jan 16, 2022 5:05:59 GMT -5
I use horse laxative
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Post by Rockoonz on Jan 16, 2022 11:57:11 GMT -5
I got something similar, same price when I built my saw. I believe it's 303 hydraulic oil. It's water thin (or close to it) and seems to work well enough. I don't mind the odor and wanted something cheap because my saw is completely home built and didn't want $300 in oil if the build was a failure 🤣 It is 48cSt (ISO) viscosity. Pretty much AW68 equivalent. For a saw <10cSt is ideal, <15cSt is okay, according to Barranca on their website (based on their list). Thicker oils cannot flow into the point of cut to flush/cool sufficiently. The good news is the 303 went through a lawsuit because they didn't add enough anti wear additives, which are generally the toxic parts of a hydraulic oil. I will include a link to the msds, but keep in mind they rate hazards based on intended use, which does not include mist from using it as a cutting fluid. martinlubricants.com/wp-content/uploads/2015/03/SDS-_-Xtreme-Tractor-Hydraulic-Fluid.pdf |
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Post by Rockoonz on Jan 16, 2022 12:08:20 GMT -5
Another thing to think about, the bicycle fenders the old timers put over their blades and the uvula like thing on the lid of some saws may help with spray, but the main benefit is the drip/stream of lubricant hitting them and falling onto the rock at the point of cut. With the newer sintered blades running high RPM's and flinging most of the oil back off, something like that inside your saw would theoretically extend blade life and lengthen the time between swedging/sharpening the blade.
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