My 4AG burns oil on start up and after sitting for 6+ hrs.
I am led to believe it is a worn valve stem seal. When cold, the crack/worn seal lets the oil sitting in the valve spring hole/seat drip down into the cylinder
->
start up it burns the oil off.
I have no other oil burn except high revs (5000+) or when cold above 3500 and pushing as do most 4ag.
I have good healthy compression of 200psi (exceptional for a big port 4AG. Factory compression of 178psi) across all cylinders. If you have low compression then you have other problems
Your options are:
rebuild head
OR
wiat for a while (and $$$) to decide on a PROPER upgrade rather than a FIX.
It's more an embarissing problem than an PROBLEM. (just check you oil regularly!!!)