Recipe of the day: DIYSwede's microbrewed ISO 68-ish Way Oil

**mklotz** · Jun 4, 2019, 11:38 AM

We don't need no steenkin' spread sheets. Let R be the percentage of Tellus required. Then (1 - R) is the percentage of chain saw required. With ISO 68 as the desired goal, this leads to an equation that looks like this...

32 * R + 125 * (1 - R) = 68

which, when solved, leads to R = 0.61 and, of course, 1 - R = 0.39

**Scotsman Hosie** · Jun 5, 2019, 02:22 PM

Originally Posted by mklotz

We don't need no steenkin' spread sheets. Let R be the percentage of Tellus required. Then (1 - R) is the percentage of chain saw required. With ISO 68 as the desired goal, this leads to an equation that looks like this...

32 * R + 125 * (1 - R) = 68

which, when solved, leads to R = 0.61 and, of course, 1 - R = 0.39

What is that you are saying?

**mklotz** · Jun 5, 2019, 04:17 PM

Originally Posted by Scotsman Hosie

What is that you are saying?

I don't understand your question. Do you not understand how the equation arises? Please clarify.

**benkeller3** · Jun 10, 2019, 07:05 AM

Since I do not have a drum of Shell Tellus hydraulic oil ... Wonder what would be a good substitute for it. Would any iso 32 oil work? Have lots of Stihl bar oil in the shed.