I have 2 S70s: '98 with 139,000 and 2000 w/ 105,000. Have done timing belt change on my son's 850 which appears to be same engine as the '98. I used the Bay 13 instructions.

Are instructions similar for 2000 S70? I don't remember but does the '98 have both hydraulic and mechanical tensioners, and what does the 2000 have? I did not change the tensioners on the 98 and plan to do so this time.

Should I replace anything else besides the tensioners? I replaced both serpentine belts recently. How about the water pumps? How long do they usually last in these cars?

Thanks for your help in advance.