Not true. The thread started out as a simple VOA analysis of Rislone with some conclusions. The basic analysis showed the base oil was a SAE 20 weight. "Severely hydrotreated or heavy napthenic distillates" simply means that this stuff is a mix of low viscosity and higher viscosity petroleum oils was used to make the 20 weight base oil.quote:
This thread started out with Rislone being nothing but 20 wt. oil and ended up with it being "severely hydrotreated light or heavy napthenic distillates." Again, it seems like we glorify a limited number of expensive additives while dissing old timers like MMO and Rislone.
Here is my recommended Protocol for Testing:
Flush engine with LC or Neutra.
Install new filter and preferably a dino like Chevron Supreme, run for 4k miles.
Do a UOA (Oil Sample #1).
Drain, change filter, and install new Chevron Supreme with Rislone additive. Send in a VOA (Oil Sample #2) with Rislone in the oil mix that will be placed in the engine.
Run for 4k miles and have a UOA (Oil Sample #3) done.
The differences in VOA and UOA will show a change in additive packages and wear metals with and without the Rislone.
A UOA will not show the base oils or any solvents that might be part of Rislone.
[ November 26, 2003, 04:41 PM: Message edited by: MolaKule ]