The cost of analysis from Oil Guard is inexpensive, but it looks like the results follow the price. Questionable.
Can you be more specific? I mean, which part of the analysis do you question? TBN, viscosity, my sodium??quote:
Originally posted by 59 Vetteman:
The cost of analysis from Oil Guard is inexpensive, but it looks like the results follow the price. Questionable.
Thanks for the feedback. I've just never seen an analysis come back with a viscosity above 16 cSt. I guess that is right at the bottom of the 50wt range. 0.5% soot for 5000 miles is about average, I think.quote:
Originally posted by MolaKule:
Tim,
Wear metals look good. Viscosity is only one cSt over spec, and most likely due to soot buildup, nothing really to worry about. This is a SAE 40 weight oil.
Resample if suspect and change air filter.
quote:
Originally posted by 59 Vetteman:
The cost of analysis from Oil Guard is inexpensive, but it looks like the results follow the price. Questionable.
The bypass is constantly removing whatever nasties it will, at the tune of the entire contents of the sump every couple minutes or so (it took less than 10 seconds at idle to fill my sample bottle). So you will not see any detectable difference input vs output.quote:
Originally posted by Paul L Fisher:
I would think sampling at the exit of the bypass filter would be bad, no?Amsoil recommends sampling from the dipstick tube or from the drain plug. I believe their sampling petcock is on the input side of their bypass filters as well. I would think the bypass filter removed all the nasties and would make any sample at its output inaccurate.