There are so many misleading stories out there about the Oldsmobile Diesel engines its truly hard to keep tract, not alone understand it all. I have owned several throughout the years and currently own just one, in my 1985 FWD Oldsmobile Ninety Eight. This particular LS2 V6 engine was only produced UP TO February in 1985, and then GM gave the ax to the ENTIRE diesel program. It was truly a shame, because this last produced engine had all the "bugs" worked out of it. It contained a 4 bolt main bottom end, it had extra head bolts for the high compression and infamous head gasket failures in prior engines. It had the factory water separator to alleviate water in fuel issues. However its reputation killed the entire GM diesel program, and hurt diesel engine sales in general throughout the automotive industry. A lot of this was engineering issues, a lot of it was customer and service technician issues. I'm not getting into a lengthy drawn out conversation, but when you have customers not knowing how to drive or maintain these new engines, nor do you have shop technicians who knew how to diagnose or work on them, the GM diesel programs demise was inevitable. Another thing before closing, the Oldsmobile Diesel blocks were just that, they were NOT gas Conversions...anyone who says they were are idiots. HOWEVER a lot of guys have taken and converted the Diesel blocks to gas because the blocks are HEAVY DUETY and can hold up under severe racing conditions. Hope this tidbit of information can be useful to someone out there.