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SAE 5w20
According to the 1999 Mercury Sable Owner Guide : ( 5W-30 )
( 5W-30 ) is the preferred oil , according to the Owner Guide
SAE 5w20 any major brand.
5W-30 is the preferred engine oil , according to the Owner Guide
The 1995 Mercury Sable would have come from the factory with ( 5W-30 ) oil in the engines
5
put some oil in it then!!
That really depends on what model year of Mercury Sable , and which engine you have A little more information please
This procedure is detailed in the Owners Manual - See "Related Questions" below
because it has no oil in it....?
The oil pump is located inside the oil pan.