Black Forest LLC, Glendale, Wisconsin, USA

Services for Mercedes-Benz

1980 through 1997 vehicles

Lubrication Service

Brake Fluid Flush

Cooling System Service

Rotate & Balance Tires

Automatic Transmission Service

Differential Service

4WD Transfer Case for 4Matic models (124 chassis)

Computer Diagnostic Scan

Air Conditioning Service

Note: It is a common misconception that R-12 “Freon” refrigerant is no longer available and that older cars must be converted to operate with R-134a refrigerant. Not true! R-12 and R-134a have different heat transfer and oil transport properties. Each type works best in an A/C system designed specifically for it. Although R-12 is slightly more expensive when the time comes to recharge your A/C system, we believe this doesn't justify the tremendous cost and somewhat reduced performance associated with a conversion to R-134a.

Pre-Purchase Inspections

If you're considering the purchase of a pre-owned Mercedes, a pre-purchase inspection is a wise expenditure. We can give you a clear picture of the car's overall condition and point out specific issues that will need to be addressed. The two most obvious benefits to you are:

  1. We can protect you from purchasing a misrepresented vehicle with hidden problems and / or requiring expensive repairs.
  2. We provide you with knowledge that will help you negotiate a sensible price with the seller.

For 1996 and newer vehicles, we will perform a complete diagnostic scan, road test, visually inspect the vehicle for about one hour, and consult with you for another 30 minutes to discuss our findings.

For vehicles 1995 and older, we perform a comprehensive one-hour inspection followed by a road test and a 30 minute consultation with you.

Beyond the basic inspection described above, we can investigate specific items in greater detail if needed. Let's say, for example, you've found a car you like but the air conditioning doesn't work. The seller tells you, “it just needs a Freon refill.” Do you believe him? We can test the A/C system thoroughly and tell you what the problem really is. Are you looking at an '80s car that shifts a bit hard? We can test the transmission operating pressures to see if someone has cranked up the modulator to conceal a shift slip. Beyond that, we can test cylinder compression, fuel pressure, cooling system efficiency, or just about anything else that concerns you. Such services will be billed to you on an actual-time basis at an hourly rate of $90.00.