Be sure not to use the 5W-30 as it is likely to be burned, though you may find many suggesting you to use synthetic. I would recommend regular oil which you should be changing every 4000 miles.
A 1997 BMW 328i uses standard 10w-30 engine oil. This provides a good balance of protection and heat dissipation for the engine.
The type of oil for a 1997, BMW 540-I is a synthetic 5w40 blend.
5w-30 full synthetic
climb under it an on the oil pan it has a screw an that's how you take change the oil in a 1997 BMW 313i
What is the oil for a BMW e90 318i
for most cars driven in average weather you us 10-40 grade oil. ... What kind of oil do you put in 1996 BMW 328i? How many liters of engine oil has BMW? ...
inside the oil filter housing
The oil dipstick on a 1997 BMW 528i is located on the left side of the engine. It has a tube which connects to the engine block and directs the dipstick into the bottom of the oil pan.
synthetic oil
6.9 Quarts
Bottom of the engine on the oil pan.
Best is a name brand 4stroke motorcycle oil. 20w50 viscosity. Changing oil ad filter will require just under 4qts.