Oil Additives What Really Works

[S2Mike]

Hi, I have noisy hydraulic tappets on a Ford Cologne V6 engine, only 47000 miles on the clock. I have been recommended to put an additive in the oil to increase lubrication and protection. I would like to hear about anyone else's experiences , advice or recommendations.
Ta

[S2Mike]

I believe it is castrol magnetec. Put in by the previous owner, needs a change so perfect opportunity to put some good stuff in.

[S2Mike]

Ok will give it a change, but will hold back on the additives. I can only find good results on the internet so there must be something they're not telling us, it can't be that good!
Ta.