Skylark L4-138 2.3L DOHC VIN D MFI (1988)
15.
Change the engine oil and filter, being sure to use a PF 1225 oil filter, or equivalent.
16.
Fill the cooling system with new coolant meeting GM Specification 1825-M, according to directions in the applicable, Service Manual Section 6B.
Add two (2) engine cooling system sealer pellets from package, P/N 03634621, to the cooling system.
NOTICE:
Do NOT recycle coolant from this engine. Dispose of the coolant properly.