Switching from Standard oil to Synthetic

What is the consensus on switching from standard oil to synthetic?

Vehicle is 96 Rodeo 3.2L engine, automatic transmission, 4WD, 120,000 miles
Functionally equivalent to a Honda Passport, which is why I've crossposted.

I've been changing oil / filter every 3K miles since I bought it with approx 80,000 miles,
no idea how it was cared for before me.

Any particular process for switching this way besides just doing a standard oil change
and filling it with synthetic?

If I did switch to synthetic for a couple / three cycles and then wanted to switch back
is there any "special" procedure I should be aware of at that time?

If you're running synthetic and need to add a quart of oil inbetween changes, does
that additional quart HAVE to be synthetic or can standard mix with synthetic?

Thanks, in advance
Phil Z

 

My understanding is that synthetic and petro are compatible.

Just drain old petro and refill with synthetic.

And vice versa.

I run nothing but synthetic in all my vehicles. It makes a big
difference on start-up in the winter up here when you have to leave the
car outside in sub-zero weather. It doesn't turn into molasses like
petro does.

In hot weather, synthetic provides a small extra measure of protection
in the event of engine overheating problems. It maintains viscosity
better at extreme temperatures.

I also run nothing but synthetic in my small engines. Especially my
lawn tractor, which I abuse to maintain trails through heavy brush.

 

Never considered that, thanks for the tip!