1.   Even relatively small carbon deposits can reduce engine performance.

2.   The carbon deposit was thought to come from car exhaust fumes from a large car park close to the church.

3.   Carbon deposits accumulate in the combustion chamber over a period of time and miles.

4.   Carbon deposits in the depths of the earth respond to intense heat and pressure, producing these coveted bits of stone.

5.   TLC recommends that the liquid Powermax Quill be added to the first tankful of fuel for immediate cleansing of carbon deposits in the combustion chambers.