- SAE 5W-40
- This is a synthetic motor oil that is specifically designed for Mercedes-Benz vehicles. It provides excellent protection against wear and tear, and it can help to improve fuel economy.
Here are some additional tips for choosing the right oil for your 1991 300 E:
- Always check your vehicle's owner manual to find out what type of oil is recommended.
- If you live in a cold climate, you may want to consider using a lighter-weight oil, such as SAE 10W-30.
- If you live in a hot climate, you may want to consider using a heavier-weight oil, such as SAE 15W-50.
- Change your oil regularly according to the maintenance schedule in your vehicle's owner manual.
