Oil does not wear out it just gets dirty. Change it every 7,500 -10,000 miles if you use synthetic depending on how you drive.
Oil last forever but oil does get dirty. Synthetic oil like conventional oil does get dirty. You can extend your oil changes slightly if you synthetic oil but no more than two or 3000 miles.
If your engine leaks oil, no you should not use synthetic oil because it will clean sludge and can make the leak worse. If your engine does not leak oil, I would highly recomend using synthetic oil(Pennzoil Ultra 10W30 from Walmart is a good and pretty cheap choice). As long as your engine does not leak oil using synthetic oil is a great choice regardless of how old it is.
Synthetic Mobil 1 oil last in sealed container has a shelf life of five years.
yes you can synthetic oil can go in any engine
The Owner's Manual specifies 10W-30. I use Quaker State Full Synthetic but traditionally, one uses non-synthetic engine oil for a 4-cylinder engine. As long as you use 10W-30, you really can't go wrong. Try not to mix synthetic and non-synthetic oils. Check what was used in the last oil change and use as close to that as you can.
Lucas also makes a synthetic engine oil additive.. Yes.
Yes, you can. It is even sold as a Synthetic Blend.
No, as long as it is the proper weight. In fact I highly recommend synthetic oil be used in any air cooled engine.
No, old oil can use synthetic engines
I'm not a mechanic / technician but as long as your engine doesn't burn oil or leak oil I would say ( yes ) I switched my 1995 Ford Explorer to 100 % synthetic engine oil back in 2001 and have been using synthetic ever since with no problems
I switched to full synthetic engine oil in 2001 and have no oil leaks on my 1995 Ford What makes you think you will have leaks? And if you think you will have leaks then why would you use synthetic? You will have no leaks that you would not have with conventional oil.
I use synthetic oil in my 2002 PT Cruiser, and it runs great! Synthetic costs a little more, but it actually better for your engine.