I've read the instructions on the MB Leather Conditioner that came with the car, and I think I understand the method of application.

What isn't mentioned is: What is the proper frequency for conditioning the leather?

Should it be done weekly, with every car wash?
Should it be done quarterly, with every car wax?
Should it be done bi-annually, with every oil change?
Should it be done annually, with every ???
Should it be done whenever they look dirty?

Anybody know the answer?

first i would get something other than the MB leather care (overpriced and doesnt work too well). I would say it depends a lot on how ur car is treated. Do you get into a lot wearing wet clothing (ie does it rain a lot?), does it sit in the sun a lot? and so forth. To be safe I would say once every 2 months.

Al, what would you recommend for the C320's leather?

Also, is there a wax you can recommend for the wheels?

I've been meaning to ask the same question as Oggle. Can I use Meguiars leather care on my '95 C 280's seats? I only ask because it's a different kind of leather than I'm used to.

Lets see, here are some good leather products...

Leatherique
Zaino Z10
Pinnacle Leather conditioner
Griots Leather conditioner

a couple more good ones(forgetting them at the moment), Pinnacle smells the best imo(very similar to new leather).

Oggle don't bother with wheel waxes, especially the one called wheel wax. Your wheels are either painted silver and clearcoated or clearcoated metal, the paint on your car is also clearcoated, so why not treat it the same? I use zaino on my wheels, works great. Easy to clean and makes the mega glossy. Don't use any carnuaba based stuff on wheels because it will melt right off, especially if you drive hard.

Oh yea, redid the clearbra, came out awesome, will post pics soon.

Thanks for the info, Al. You're 'da man!