Improving Diesel Engine Performance

I think this is something Diesel Engine Drivers will be interested in.

Some doing 14 km per litre. Some doing 9 km per litre.

So,.. what is the secret. 

Yes the engine age and condition plays a part,

but how can we as drivers do some simple things to make the engine go that extra mile,... errh, kilometer.

Please share, whether it's a special additive, or some home made trick or getting the mechanic to do something special.

Thanks..

Originally posted by Rbs70:

You know Tong also?........

knn, all the oldies you know ka liao.........

U used to play mahjong with them after nite shift, especially friday nite, knn, you play fast fast, these oldies, tired,  cannot see probably, anyhow eat, then kenna char orh