I have two bottles of TRD LSD OIL FR it is GL-5 85/140 the part number is A0420-A0001 that I have never used, still unopened, I find Castrol SAF-XA to work really good, I found mineral lsd broke down very quickly - after 3 months no good, SAF-XA lasts well over a year before breaking down, it's $20 a bottle which is twice the price of mineral BUT with mineral I was changing 4 times a year, so SAF-XA looks cheap!!