STIHL Inc. Mix Oil Comparison

STIHL Inc. Mix Oil Comparison 500+ hour static run test

Seven BR 600 blowers

Test results from June 2006

Machines ran at W.O.T. 24 hours around the clock

Represents approximately 1 year of professional use

All oils mixed per manufacturer‘s instructions

CrankcaseSTIHL HP Ultra STIHL HP STIHL Low SmokeSTIHL HP Super

Amsoil ® 100:1 Echo Power Blend®Shindaiwa One™

CrankshaftSTIHL HP STIHL Low SmokeSTIHL HP Super

Amsoil® 100:1 Echo Power Blend®

STIHL HP Ultra

Shindaiwa One™

Piston CrownSTIHL HP Ultra STIHL HP STIHL Low SmokeSTIHL HP Super

Amsoil® 100:1 Echo Power Blend®Shindaiwa One™

Piston Crown Carbon Build-up

STIHL HP Ultra STIHL HP Super STIHL HP

Echo Power Blend®Amsoil® 100:1

STIHL Low Smoke

Shindaiwa One™

Piston Skirt

Echo Power Blend®Amsoil® 100:1

STIHL Low SmokeSTIHL HPSTIHL HP Super

Shindaiwa One™

STIHL HP Ultra

Exhaust Valve

Echo Power Blend®Amsoil® 100:1

STIHL Low SmokeSTIHL HPSTIHL HP SuperSTIHL HP Ultra

Shindaiwa One™

Combustion Chamber

Echo Power Blend®Amsoil® 100:1

STIHL Low SmokeSTIHL HPSTIHL HP Super

Shindaiwa One™

STIHL HP Ultra

Spark Plug

Echo Power Blend®Amsoil® 100:1

STIHL Low SmokeSTIHL HPSTIHL HP Super

Shindaiwa One™

STIHL HP Ultra

Performance

STIHL HP Ultra

STIHL HP Super

STIHL HP

STIHL Low Smoke

Amsoil® 100:1

Shindaiwa One™

Echo Power Blend®

170

170

180

170

170

170

180

180

140

150

110

150

160

120

7210

7230

7190

7310

7180

7200

6940

7350

6900

6860

6500

6600

6800

6850

+10

-30

-30

-60

-20

-10

-60

+140

-330

-330

-810

-580

-400

-90

Compression (PSI)

New500

Hours Variance

Max RPM

New500

Hours Variance

Compression Comparison (PSI)

100

110

120

130

140

150

160

170

180

190

STIHL HPUltra

STIHL HPSuper

STIHL HP STIHL LowSmoke

Amsoil®100:1

ShindaiwaOne™

Echo PowerBlend®

New PSI

500 Hr PSI

R.P.M. Performance Comparison

5500

6000

6500

7000

7500

8000

STIHL HPUltra

STIHL HPSuper

STIHL HP STIHLLow

Smoke

Amsoil®100:1

ShindaiwaOne™

EchoPowerBlend®

New RPM

500 Hr RPM

Percentage of Leakdown at 500 hours

3%

40% 40%

83%

71%

40%

68%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

STIHL HP Ultra STIHL HPSuper

STIHL HP STIHL LowSmoke

Amsoil® 100:1 ShindaiwaOne™

Echo PowerBlend®