Following bore honing:

In the honing process, abrasive from the hone stones and debris from the cylinder may be retained in the hone pattern. If this debris is allowed to remain, the early wearing out of the piston rings will result. Wiping the bores out with an oily rag or washing with kerosene or similar solvents will not remove this debris.

To ensure bore cleanliness, the bores should be scrubbed thoroughly using hot soapy water and a firm brush until a white cloth wiped over the cylinder walls remains clean. Following this, the bores should be wiped over with a lightly oiled rag to prevent corrosion. If the block is to be put into storage before assembly, a preserving oil should be applied. It may be necessary to remove any storage preservative before using the components - the manufacturer's instructions should be obtained and followed.