[robucop]

Originally Posted by Pete R

The oil in the early tensioners is self contained in the housing, The later ones have holes in the back and the oil also fills a chamber between it and the block. I believe the later tensioners also have 2 more sets of bi-metal disks and retract more as the engine gets to operating temp, keeping the belt tension more even though out the temp range.

Hi Pete,

Thanks for explaining.