Many reliability engineers see varnish buildup as just a way of life that can only be addressed after operating problems occur. But the cost of waiting to fix that problem is more than you’dthink, because the related hidden costs can add up before you even realize you have a varnish problem in the first place.

Is your varnish problem costing you?
How much do you know about varnish
How much do you really know about varnish?