Is there any harm in using a different brand of oil to top off if it's the same weight?

 

Absolutly not.
It doesn't even need to be the same weight for that matter.
Just don't mix with synthetic.

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99 XLT 5.4l reg cab
4 wheel disc/ABS
5 star larait style wheels
Toreador red 2tone
3.55 gears
255/70/16 OWL
Delta toolbox
Eclipse 5340 cd player
Memphis ARCS50 component speakers (excellent sound)
Sherwood amp
subwoofer coming soon
More mods as funds become avalible.

 

Thanks for your response. I didn't think it mattered but thought i would ask anyway. Bob.