Donaldson Endurance Maintenance Cost Savings Model

Current Practice

New Practice

A

Number of trucks?

100

100

B

Miles driven per truck per year?

100,000

100,000

C

Oil change interval (mileage)?

20,000

40,000

D

Air change interval (mileage)?

50,000

100,000

E

Number of oil changes per year?
Divide B by C, then multiply by A

500
 

250

F

Number of air changes per truck?
Divide B by D, then multiply by A

200

100

G

Cost of oil per change?

$50

$50

H

Cost of lube filter per change?

$20

$30

I

Cost of air filter per change?

$35

$57

J

Cost of labor for oil change?

$50

$50

K

Cost of labor for air change?

$25

$25

L

Cost for oil changes per truck?
To calculate, add G + H + J

$120

$130

M

Cost for air changes per truck?
To calculate, add I + K

$60

$82

N

Total cost for oil changes per year?
To calculate, multiply L x E

$60,000

$32,500

O

Total cost for air changes per year?
To calculate, multiply F x M

$12,000

$8,200

P

Cost per year
Add N + O

$72,000

$40,700

Q

Extended Service Dollar Savings
Subtract P-New from P-Current
 

$31,300

R

Extended Service Savings %
From Current column, divide Q by P

43%