Yes, your 50% off coupon is good for an oil change using synthetic oil. The coupon is good for an oil change using any oil of your choosing.
No, old oil can use synthetic engines
yes you can use synthetic oil if you want to
You can use synthetic, synthetic blend, or conventional oil. It is your choice.
Yes. Marvel mystery oil is fully compatible with synthetic oil.
Synthetic oil.
Yes you can use synthetic oil in a 97 Escort.
Yes, you can even mix synthetic with conventional oil.
Yes, of course you can. You can even mix synthetic with conventional oil.
Most use Synthetic Oil.
Yes you can use a synthetic blend or 100% synthetic.
Synthetic oil works better in some engines than does petroleum-based oil. Nylon is synthetic.
Yes, but you do so at your own risk. If the manufacture recommends synthetic oil they have a reason for doing so. Turbo engines, or high performance engines benefit from the use of synthetic oil. My advice is to use synthetic if that is what the manufacture recommends.