Yes, as long as the surface is clean and fairly dull.
Yes. Clean and degloss the oil based paint, apply an oil based primer, then apply the water based paint.
can i use water base paint over oil base paint
Yes. Clean and degloss the oil based paint, apply an oil based primer, then apply the water based paint.
yes
You can but it wont last, you will have a bigger peeling mess.
No, you can't .
That is not generally recommended.
Yes, you can paint oil paint over sound water based paint easily, just be sure to degloss and clean the surface prior to painting.
Water based paint such as latex and acrylic do not adhere well to oil paint. In order to paint over oil paint you must sand the surface and prime it with a good quality oil or alcohol based primer and then top coat with a water based paint. Oil based paints will adhere well to water based paints sp it is unnecessary to prime before top coating, unless you have had to do any repairs to the surface.
Yes, if the original is in good shape, not flaky.
Oil based paint has a very hard surface which makes it difficult for water based paint to stick to properly. It should be primed first. Water based primer is fine. To make certain the water-based primer has good tooth, be sure to lightly sand the oil-based paint and wipe it down with a tack-cloth.
It will protect the paint as long as you use a water based varnish, never use oil based varnish over water based paint. Tip: "water based enamel= water based finish". "oil based enamel= oil based finish".