in the oil
No.
Your "operators manuel" should explain which type of oil to use. I have a 96 Buick, LaSabre, that uses 10/30 wt.
Inside the oil pan bolted to the engine block.
where is the oil plug on my 1990 park avnue
= How do you reset change oil soon light on 1993 buick park avenue? =
Bottom of the oil pan.
You can find the 1993 Toyota oil drain plug on the bottom of the oil pan. The oil drain plug will be in the center of the oil pan, near the front.
The Purolator oil filter L10111 fits several cars. A few of them would be the Buick Century, the American Motors Concord, Eagle and Spirit, the Asuma GT and SE, the Buick Electra, Lacrosse, and LaSabre.
on the bottom of the engine's oil pan
That sounds like a wheel cylinder leaking brake fluid.
The oil drain plug on a 1993 Acura Legend is 14mm x 1.5