Given the 10.7:1 compression of the S90's engine and whiteblocks general propensity to scorch exhaust valve, I run 91 (R+M/2) as much as I can. $800 seems high for the timing belt service belt on this motor, it's a very very simple setup and there's lots of room. totally different to the VVT whitebl...

Doing the timing belt is relatively easy considering doing other types of timing belts. But you'd certainly want to be very confident with your mechanical abilities. And don't cheap out on the parts you use. I use OE parts, you do need to know the manufacturer of the original parts. Like using the C...

I never did a write up. Attached is the Official Timing belt procedure, which is lacking. At the bottom there is a link to the engine reconditioning manual. On page 21 of the reconditioning manual, it tells you to remove the vibration damper to get the timing belt off. This is not necessary. On the ...

There's just not a lot of you tube stuff related to the 960. But it's pretty much the same as doing the timing belt on an 850 or V/S70. You'll find plenty on those cars. I'm pretty sure the timing belt replacement is exact on the 5 cylinder white block. With the 960 giving you a lot more room than t...

That Volvo should have output like your Honda. The Mercedes has a controlled alternator that gets regulated by the engine control module like newer Volvos. The newer car (mid 2000's and newer for many makes) alternators will have outputs in the upper 14 V range at times and will go to very low charg...

13.7 would be target after a few minutes. Initially it should be close to 14 if not a few tenths more. When the load is 75% +/- of the alternator capacity with adequate RPM the voltage will begin to slip below 13.7. If you have lower voltage then set meter to AC V and check to see if the AC voltage ...

This would be worse case. Perhaps the front trans seal.
But I think if it were that it would drip straight down between engine and trans.
And there is the shift shaft seal.

Power wash clean. Add some Trace Dye to the ATF. Use a Ultraviolet Light trace the leak back to the source.

* The ATP AT-205 Re-Seal took care of a mystery seepage. https://www.amazon.com/ATP-AT-205-Re-Seal-Stops-Bottle/dp/B000NVW1LM/ref=sr_1_1?crid=34MT9YEP8C0YE&dchild=1&keywords=atp+at-205+re-seal&qid=1609808320&sprefix=atp+at%2Caps%2C173&sr=8-1 https://www.matthewsvolvosite.com/foru...

* You may have to get what's left on eBay. Monroe, Bilstein, KYB and Gabriel all don't show a product number. FCP seemed to have a few sets April 2020 but I think it's discontinued everywhere. https://www.facebook.com/permalink.php?id=179943528721059&story_fbid=2854383307943721 * Professional Pa...