I would use 10w30 Synthetic in your air cooled engine.
the kind of oil this van takes is a conventional 10w30
89 tempo engine will work
80 percent of 89 = 71.280% of 89= 80% * 89= 0.80 * 89= 71.2
The oil pan is bolted to the bottom of the engine
how many quarts of engine oil does 89 240sx takes
My 89 Lincoln Town Car has a 5.0 liter engine and takes 5 liters of oil.
80 ÷ 89 = 0.898
5w30 0r 10w30
The oil drain plug on an 89 Toyota 4Runner is located on the bottom of the engine. It is positioned on the left side of the oil pan for easy access and draining.
10-30 SM or SL rated oil.
It will be on the driver side of the engine....next to the oil filter.