Ninety-Eight — C-body, front-drive (1985–1990)

the standard engine, 110 hp; Wikipedia's Buick V6 article lists the 1985 Ninety-Eight among the LK9's applications, and its Ninety-Eight article gives the 3.0L V6 for 1985 and drops it for 1986; the 1985 NICB Oldsmobile engine table prints a 3.0L V6 2 BBL with VIN letter E but names no car line and no RPO code; shared C-body code, the Buick Electra also lists it for 1985

VIN code 3; optional in 1985, multiport injection, 125 hp, sequential from 1986, 150 hp in 1987 (Wikipedia's Ninety-Eight article, which gives 140 hp for 1986); Wikipedia's Buick V6 article lists the 1985–1987 Ninety-Eight among the 3.8 FWD engine's applications under a combined LG2/LG3 heading, which names neither code, and gives 125 hp to the pre-1986 engine and VIN code 3 (the LG3) to the 150 hp engine; 1986 is left out because the car's 140 hp matches the article's LG2 line while the sibling gnttype.org Buick Electra block prints LG3 for 1986, a same-year conflict between codes left unsettled; shared C-body code: gnttype.org's 1986 and 1987 Buick VIN tables print LG3 for the Electra (cited from the Buick Electra; its 1985 Electra block is a copy of its 1986 block and is not used), but no source dates the code on an Oldsmobile besides Wikipedia, so the row stays single-source; 1988 is left out because Wikipedia's Buick V6 article ends the Ninety-Eight's list at 1987

VIN code C; 165 hp in 1990; Wikipedia's Ninety-Eight article names the LN3 for 1990 only and gives the 3.8 SFI 150 hp for 1987–1989, while its Buick V6 article lists the 1988–1990 Ninety-Eight under LN3, so 1988–1989 is left out as a conflict between the two articles; both are Wikipedia, so the row is single-source; shared C-body code, the Buick Electra is listed for the same years

optional, 85 hp; Wikipedia's Oldsmobile diesel article lists the front-drive LS2 for the 1985 Ninety-Eight (and the Buick Electra and two Cadillacs) and its Ninety-Eight article drops the diesel for 1986; the 1985 NICB Oldsmobile engine table prints 4.3L V6 diesel letters but names no car line and no RPO code

four-door sedan with floor shifter; Wikipedia's Ninety-Eight article names the Touring Sedan's "W12 option package" and gives its production for 1987 through 1990; the NICB manuals print "98 Touring" for 1988–1989 and "98 Touring Sedan" for 1990 (symbol CV), so 1987 is not claimed

only in: Touring Sedan; larger front stabilizer bar, added rear stabilizer bar, firmer bushings and stiffer springs; Wikipedia's Ninety-Eight article says the Touring Sedan was equipped with the FE3 suspension package; years follow the W12 row (NICB 1988–1990)