• What price/warranty should I put with this vehicle? Is the engine sound, or does it need (or will shortly need) major work?
• If I accept as trade-in, what is the condition of the engine?
• Is this a good vehicle to buy used at this price? Is the engine sound, or does it need (or will shortly need) major work?

Drive Fuel Economy over time

• Find normal seasonal variation and unexpected changes to drive fuel economy deserving investigation of equipment, route, or driver

Drive Fuel Economy compared with other variables over time

• Tool to help find the cause of abnormal fuel economy (Load change? Speeding?

Engine Assessment – Overall Score

• Is it time to sell this vehicle? Is the engine sound, or does it need (or will shortly need) major work?
• If I sell/trade-in, what is the condition of the engine?
• Is this a good vehicle to buy used at this price? Is the engine sound, or does it need (or will shortly need) major work?

Engine Assessment – Component Scores

• Determine if performance is getting worse as indicated by specific scores; how fast is it deteriorating?

Which new components or after-market add-ons are worth it?

• Quickly and accurately determine the value of implementation by first comparing value of limited implementation with “controls”

Save time diagnosing and give customer better time and cost estimates. Keep your customers satisfied!

Engine Assessment – Overall Score

• If engine is physically sound, trust the OBD codes; otherwise, don’t!

Engine Assessment – Upper Engine

• Determine if performance is poor due to inadequate power stroke (head gasket, bad injectors, poor fuel quality)

Engine Assessment – Valve Seal

• Determine if performance is poor due to poor valve condition (dirty, worn)

Engine Assessment – Valve Lash

• Determine if performance is poor due to poor valve lash adjustment

Engine Assessment – Lower Engine

• Determine if performance is poor due to blow-by (rings, pistons, and cylinder walls)

After Rebuild: Engine Assessment – Overall Score

• If engine is physically sound, your rebuild is likely good. Otherwise, don’t give it to the customer YET.