CLOSS TIRE & AUTO will be Closed August 31st - Sept. 2nd for the Labor Day holiday.

Waukegan Auto Repair

Mon - Fri: 8:00 AM - 5:30 PM | Sat: 8:00 AM - 1:00 PM

The Importance of Preventative Maintenance

Recently we had a 2002 GMC Savanna come into our shop for a starting issue and needed a service for preventative maintenance. This vehicle has a G2500 5.7 Liter engine. First, we installed a new battery, as well a starter. After the install we proceeded to change the oil.

After draining the oil we inspected it to find a chocolate milky oil. What is that you might ask? When coolant mixes with engine oil, it creates a light brown liquid that looks an awful lot like chocolate milk. If you notice this on the dipstick, or in the pan after draining it, there’s a problem and you need to diagnose it. 

Finding the leak can be tough to do, though, unless it’s something pretty obvious like a cracked block. Check for head gasket leaks, and if necessary, do a leak down test on each cylinder.

Now we are in the process of pressure testing the system.

We now have to dismantle the engine to check for damage.

Dismantling Motor | Closs Tire & Auto

We remove and dismantle the front clip. Only to find that the vehicle may have a possible head gasket or cracked cylinder repair that will be needed.

Engine Block Dismantle | Closs Tire & AutoEngine Rebuild | Closs Tire & Auto

Here is the cylinder that had the coolant in it.

Coolantin Cylinder | Closs Tire & AutoCoolantin Cylinder | Closs Tire & AutoCoolantin Cylinder | Closs Tire & AutoCoolantin Cylinder | Closs Tire & AutoCoolantin Cylinder | Closs Tire & Auto

 

Once the repair was made, rebuilding the engine can begin.

Engine Rebuild | Closs Tire & AutoEngine Rebuild | Closs Tire & AutoEngine Rebuild | Closs Tire & AutoEngine Rebuild | Closs Tire & AutoEngine Rebuild | Closs Tire & AutoEngine Rebuild | Closs Tire & Auto

 

 

All done.

All done | Closs Tire & Auto

This repair is just one of many repairs we do here at Closs Tire & Auto. Make your appointment today and let us help keep your vehicle on the road!

 

If You Are Using A Screen Reader And Are Having Problems Using This Website, please call Closs Tire & Auto (847) 336-5555 For Assistance.