@Carlos P posted:
For an oil change -> what is the best oil to use for this engine?
For the fuel ->what is the best Gasoline octane grade for this? 87 89 91?
Carlos, if you truly want to understand the madness, ask a question like "what is the best oil..." EVERYBODY has an opinion and it's slightly different than anyone else. Hundreds, nay thousands of posts have been made on this topic.
I'm willing to give you a short answer and a couple of links to a more complete discussion of the factors to consider. Just remember we're talking religion here.
My opinion if you aren't a super wrench and don't have an oil pressure gauge or oil filter added to the car:
- Use a known brand of 20-50 weight multigrade oil
- Change it every 3000 miles
- Buy regular oil or synthetic. Either one works well but regular is cheaper
- If you are feeling particularly over cautious, add a little bit of zinc oil additive at every oil change
There, simple isn't it.
By the way, the best gasoline grade depends on whether your car knocks or pings under acceleration or going up a hill. If you hear that pinging, knocking, chatter while the engine is under load, go up a grade in gas.
As promised, here's the tip of the iceberg should you want to understand the oil question in more detail: