Outer Limits 4x4 Board

Might seem a silly question but I'd rather know the cause before the cure.
I have a small amount of oil weeping from the rocker cover seal. Not dripping anywhere, but there's that nice greasy mess all around it.

Is it a symptom of a bigger problem or just a shitty gasket? I'm asking as it's only 50 000k's old and I've already tried refitting it once before. It helped a bit, but it's leaking again...

I'd try putting a fresh gasket on there, make sure you put a blob of sealant on where the cam caps sits and also re-tension all the bolts after 500 Kms, it takes a little while for the gaskets to settle down properly of they are new

having the same problem mate keen to see what the verdict is

I've cleaned it up and replaced it with a genuine Toyota gasket. I also put a dab of RTV silicone on each end as suggested. It seems that could well be the problem as it generally starts around there. I will check the bolts as well after a bit. I guess I won't know if I've fixed it for a few thousand k's.

Sometimes the plastic rocker cover warps too - also the genuine Toyota gaskets seem to be a bit thicker and better, although i haven't any statistical measurements to prove that.