Generac 17 KW UOA

[troyb43]

OIL Amsoil ASE SAE 30/10W-30
Oil Filter Amsoil EAO 34
FUEL CNG
HOURS IN USE 26
TOTAL HOURS 35
MAKE UP OIL NONE
SAMPLE TAKEN 05/01/12

ALUMINUM 3
CHROMIUM 0
IRON 6
COPPER 15
LEAD 2
TIN 1
MOLYBDENUM 44
NICKEL 1
MANGANESE 6
SILVER 0
TITANIUM 0
POTASSIUM 5
BORON 4
SILICON 29
SODIUM 8
CALCIUM 2393
MAGNESIUM 12
PHOSPHORUS 1320
ZINC 1355
BARIUM 1



FUEL ANTIFREEZE 0.0
INSOLUBLES 0.2
WATER 0.0
FLASHPOINT ºF 440
SUS VIS 210ºF 61.4
cSt @ 212ºF 10.62
TBN 7.6

Blackstone's comments
Copper and silicon read high in this sample, though that's not exactly a surprise for a generator that
is as new as this one is. Copper is probably some residual wear-in metal that has yet to wash out of the
engine, and silicon is probably from factory sealers and sand-casted parts. The viscosity was fine, and no
fuel, water, coolant, or other contamination was found. The TBN of 7.6 shows active additive left. Since
neither the copper nor the silicon appears harmful, you could leave this oil in use a little longer before you
change it.

Anyone have any thoughts or comments? I had this oil in for 11 1/2 months and plan to change it in a couple weeks. Figured I can use what I can save in my OPE.

 

[Colt45ws]

Looks good.
The CNG is really going to keep it clean over burning gasoline. You could probably go 2 years+.

 

[tig1]

A friend is a tech for Generac and often does PMs for customers. He uses M1 5-30 and changes it once a year. What you are doing looks good.

 

[JR]

the uoa looks good, tbn is super high still, wear numbers are low. i would leave in another six months to a year and sample again. imo i wouldnt change it yet.

kc