“to restore to working order!”
A Reconditioned engine is one that has been repaired to make it functional again
A Re-manufactured Engine is one that is re-machined to the manufacturers Original Engines Specifications and having all of the consumable components renewed!
This can be further explained by simply viewing the BS AU257 standard on the British Standards site.
The 12 month guarantee applicable demonstrating the confidence of work. It is the only standard that the AA and RAC, The RHA, MoD, Dept. of Transport approve!
Engines go wrong for many reasons; usually its because of a previous problem with one of the 3 liquids !
Oil, Water or Fuel.
The lack of the first two:- OIL & WATER will give you sudden, extreme and expensive failures, whilst any irregularities in the fuelling can give you, excess smoke, with poor performance and it will cause premature wear & eventual failure!