can any one help me for understanding the acceptance criteria for used oil in case of TBN, TAN, Insolubles & SAE viscosity
Thanks
Sai

Dear Sai,

Another way to look at your query is by viewing discard/condemning limits for Engine oils.

1. Viscosity : (+) 25% or (-) 20% from original KV 100 deg C
(+) 45% or (-) 25% from original KV 40 deg C
2. Base No (TBN) : (+) or (-) 50% change from original TBN
3. Water/Moisture: (+) 0.3% by volume
4. Insoluble : (+) 2% by weight
5. Flash Point : Min 170 Deg C - PMCC
: Min 190 Deg C - COC

Hussam