James, you're very welcome, anytime I can help just let me know.

It's a small percentage of jobs that require the vegetable fluid. The majority of our rentals for long reach equipment use the usual fluids. Some of our rentals are long term where the customer services the equipment on-site. We don't want the wrong hydraulic oil being mixed with the vegetable oil due to the problems discussed earlier in this thread by demobud.

Mistakes can and do happen so we try to circumvent that possibility.

I hope my explanation answers your question.

Clearly, the capacity of the hydraulic tank dictates the cost along with doubling up on the filter replacements.

I want to say the cost was approximately $2-2,300 which also included our internal labor.
However, from the customers view point, that's a darn sight more affordable considering the clean-up charge & possible fines levied from the regulatory bodies that will be swarming all over the job-site should the equipment spring a leak of non-vegetable oil in the area!

Neyc, we have in the past been asked to supply long reach excavators with environmentally friendly hydraulic oil.
I'm not by any means an expert on this but as I remember, we drained the hydraulic tank, changed the hyd filters, flushed the whole system out, filled the system with "Clarity" and then repeated the process again including changing the hydraulic filters.

An expensive process to be sure but the customer was responsible for it.

One thing to remember Ensure your service technician makes a note to inform the mechanics or customer who'll be topping the machine off daily that it must be topped off with Clarity as serious damage can occur if regular hydraulic oil is mixed with the "Environmentally Friendly" oil.