You might be unsure whether putting latex paint over an oil-based primer is acceptable.
Thankfully, it is.
Over an oil-based primer, latex paint can be applied. And in some circumstances, particularly when painting wood, combining these two materials is a wise choice.
However, due to its fumes, oil-based primer shouldn’t be used in your home’s larger rooms.
You should be aware of the following.
WHICH OCCASIONS REQUIRE AN OIL-BASED PRIMER

Oil or water are the two bases for paint. The best primers for sealing bare wood and preventing stains are oil-based.
Large interior projects should not use them because of their stronger VOCs.
There are two basic situations in which an oil-based primer should be used.

Your work is on raw wood. In this situation, an oil-based primer will provide a water-tight seal on your wood surface and stop wood tannins from seeping through. You are removing the stain. Oil-based primer is your best bet if you have a stain someplace in your home and want to prevent it from showing through your paint work. HOW TO COAT WOOD WITH LATEX PAINT OVER AN OIL PRIMER

How to Use Latex Paint Over Oil Primer on Wood

Oil-based primer does a great job of preventing stains. Tannins may not be visible, especially in species like redwood.
It works well to seal porous surfaces as well.
Here’s what to do if you’re prepared to begin your painting projects.
First, prepare the area. Do your basic paint preparation first. Next, prepare a space for your project and get your gloves and respirator ready.

Clean the surface in step two. Get your wood clean and clear of any debris or sticky buildup before painting. To accomplish this, clean the wood with soap and water.

Pressure washing a large object before painting it can help you finish it faster.
Before proceeding to the following step, give the wood time to completely dry.

3. Remove any previous gloss paint (IF NOT WORKING WITH BARE WOOD) You must take off the glossy lacquer before repairing a wood object with an old oil painted surface.

As follows:

Any flaking paint should be removed using a wire brush. After that, use a sander or sanding sponge to gradually remove the gloss topcoat. Finally, thoroughly clean the item once more to remove all dirt and debris. 4th step: prime Apply two thin coats of oil primer at this point. Before applying the second coat, allow the first coat to dry completely to the touch.

Wait 24 hours after priming before continuing with the process.

SAND WITH FINE GRIT PAPER, STEP 5 When the primer has dried, sand the surface using 100-grit sandpaper to make sure it is level and smooth.

6th step: PAINT Wipe off any dust after sanding. Now once you’re prepared, paint.
Add your latex paint, giving each coat plenty of time to dry in between. You’ll probably need between two and four layers of latex paint.

SEAL THE PAINT in Step Seven. You can apply a clear coat after you’ve done painting and allowed the paint to cure. If the artwork will be outdoors, this will assist your paint finish stay longer and withstand the elements.

Give enough time for each coat of polyurethane or polycrylic to dry between applications.
HOW TO USE AN OIL-BASED PRIMER TO COVER STAIN

How to Cover Stains with Oil-Based Primer

Try priming them with an oil-based primer if you have stains on your walls or ceilings that keep allowing paint to bleed through. Oil-based primers work incredibly well to hide stubborn stains.

Put on a respirator mask and open several windows to improve airflow in the room before you begin.
Here is what to do:

Clean up the stained area using a cloth. Utilizing your oil-based primer, cover the discoloration. Allow 24 hours. Over the primer, apply any kind of paint (latex, acrylic latex, acrylic paint, etc.) DO I NEED TO APPLY OIL-BASED PRIMER TO DRYWALL?

Should I Use Oil-Based Primer on Drywall

Oil-based primer shouldn’t be used on drywall. Instead, choose a latex or water-based primer.

Primer that is oil-based creates more harsher fumes, making it unsuitable for indoor use. Therefore, while using oil-based primer to spot-treat stubborn stains in your home is acceptable, avoid using it on expansive surfaces like a wall or ceiling.

LAST THOUGHTS Oil-based primer does an excellent job of protecting wood and preventing stains. However, a water-based primer is the way to go if you’re painting drywall.

Water-based primers are designed for indoor use and don’t release as many volatile organic compounds into the air as alternatives that use oil.
The good news is that latex paint can be applied on top of oil-based primer wherever it has been applied.