Want to know about the effects of a particular lubricant formulation on a truck engine, Shell engineer Howard Hill, the company's North American field trial coordinator, is the man to see.
Will lubricants designed for peak performance on tomorrow's trucks be backwards compatible? Hill walks journalists through the basics of the recent engine teardown of a Detroit Diesel 15-liter with 800,00 miles, evaluating the effects of next-generation engine oil formulations on older equipment.
Hill checks pistons for carbon buildup.
Comparing a new piston to one from an engine with 800,000 miles.
The analysis has to be precise, so here a piston is viewed through a magnifier inside a light box.
Hill moves on to the camshafts.
Normal wear tracks show the oil did its job.
The rings and rod bearings.
The rocker arms and roller followers.
Again, the teardown reflects normal wear.
The polish in the piston pin is not only alliterative, it's as good as the polish on a rod from an engine using current formulations.
Hill carefully photographs and catalogs the parts from each teardown.
It's a dirty job, but Shell says they've got to do it.