Technical Information · issue 25 of 1999

STIHL two-stroke engine oil; STIHL HT plus Bio

IssueTI 25/1999

Full text

Page 1 of 4

Technical Information

25.1999
STIHL Engine Oil for Two-Stroke Engines

Summary
1. STIHL two-stroke engine oil
2. STIHL HT plus Bio

1. STIHL two-stroke engine oil

1.1 Type 1.5 Miscibility
Mineral oil based heavy-duty two-stroke engine oil. STIHL two-stroke engine oil can be mixed with all

other brand-name two-stroke engine oils which
STIHL two-stroke engine oil is formulated for use in
comply with manufacturers’ specifications.
all air-cooled two-stroke engines in Central
However, to ensure maximum efficiency and
European and hot climate zones.
performance, do not mix STIHL two-stroke engine
oil with other oils.
1.2 Mix ratio
50:1(50 parts gasoline to 1 part STIHL two-stroke 1.6 Disposal
engine oil)
If necessary, old or adulterated engine oil can be put

together with other old oil from four-stroke engines.
1.3 Properties
Main features of STIHL two-stroke engine oil are: Disposal in Europe according to Code 13 02 02 of
European Waste Disposal Catalog.

. Excellent lubricity and high wear resistance

. Reduced carbonization of combustion chamber
and exhaust system, engine performance is
maintained

. Good self-mixing properties
. Intensive red color enables presence in fuel mix

to be checked

1.4 Applications

Engine oil approved exclusively by STIHL for
engines with gasoline-oil and separate lubricating
systems – with and without catalytic converter.

STIHL two-stroke engine oil is used primarily in
high-performance air-cooled two-stroke engines
which are frequently operated for long periods at full
throttle and require a high duty lubricant.

TI_25_1999_01_01.fm englisch / english
)m~ge 2 Technical Information 25.1999

1.7 Chemical-physical data

Unit Typical Data Test Method

Color red
Density at 15°C kg/m3 885 DIN 51757 (method 3)
Pour point °C - 30 ISO 3016
Flash point °C 248 ISO 2592
Viscosity at 40°C mm2/s 112 DIN 51562
Viscosity at 100°C mm2/s 11.5 DIN 51562

Life Years >2

1.8 Availability

The oil is available in the following quantities:
Size of Pack Part No.

0.1 L (100 ml) 0781 319 8401
1L 0781 319 8410
1 L dispensing bottle
5L
0781 319 8411
0781 319 8433
10 L 0781 319 8434
55 L 0781 319 8461
200 L 0781 319 8468

1.9 Important information for preparing
and storing fuel mix

. Use only brand-name gasoline.

. Do not store large quantities of fuel mix. The
mixture may separate, especially if fuels with a
high methanol content are used. This applies

particularly at low temperatures and if
condensate gets into the mixture – the fuel itself
then segregates (methanol separates from the

gasoline). This process cannot be reversed
even after the temperature has risen again. The
use of such a segregated fuel mix results in

engine running problems and may cause engine
damage.
. Storage life of fuel mix: several months

(approximately 6 months)
. Fuel mix that has been stored for a long period
should be shaken thoroughly before use.

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Technical Information 25.1999 Page 3

2. STIHL HT plus Bio

2.1 Type 2.4 Applications
Completely synthetic high-performance two-stroke HT plus Bio is particularly suitable for use in water
engine oil formulated specially for STIHL two-stroke conservation areas and ecologically endangered
engines. areas.
STIHL HT plus Bio is a biodegradable two-stroke It may be used in engines with gasoline-oil and
engine oil which meets the extreme performance separate lubricating systems.
requirements of all STIHL power tools as well as
environmental requirements. 2.5 Miscibility

STIHL HT plus Bio can be mixed with all two-stroke
2.2 Mix ratio

engine oils which are appproved to API TC, JASO or
50:1 (50 parts gasline to 1 part STIHL HT plus Bio) ISO. However, to ensure maximum efficiency and
maintain the STIHL warranty, do not mix STIHL HT

2.3 Properties plus Bio with other oils.
. Biodegradability: More than 80% biodegradable
in accordance with test method CEC L 33 T 93 2.6 Disposal

. When exposed to the effects of water, oxygen If necessary, old or adulterated engine oil can be put
and microorganisms, STIHL HT plus Bio together with other old oil from four-stroke engines.
decomposes into its natural constituents. The
CEC method describes the rate of
Disposal in Europe according to Code 13 02 02 of
European Waste Disposal Catalog.
decomposition after 21 days. The environment
friendly property of this product has no negative
influence on its performance since its base is
formed exclusively by high-grade ester

components.
. STIHL HT plus Bio provides excellent lubricating
properties, very good wear resistance and

leaves very little combustion residue in either

the exhaust port or the muffler.
. These features ensure a consistently high
engine performance, a clean combustion
chamber and a longer component life.

. Excellent low temperature properties ensure
easy mixing and trouble-free engine operation.

. Intensive green color enables presence in fuel
mix to be checked

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)m~ge 4 Technical Information 25.1999

2.7 Chemical-physical data

Unit Typical Data Test Method

Color green
Density at 15°C kg/m3 940 DIN 51757 T4
Pour point °C < - 40 ISO 3016
Flash point °C < 240 ISO 2592
Viscosity at 40°C mm2/s 55 DIN 51562
Viscosity at 100°C mm2/s 10 DIN 51562

Life Jahre >2
Biodegradability % 80 CEC L 33 A 93

2.8 Availability
The oil is available in the following quantities:

Size of Pack Part No.
0.1 L (100 ml) 0781 319 8000
1L 0781 319 8001
1 L dispensing bottle 0781 319 8002
5L 0781 319 8003
200 L 0781 319 8004

2.9 Important information for preparing
and storing fuel mix
. Use only brand-name gasoline.

. Do not store large quantities of fuel mix. The

mixture may separate, especially if fuels with a
high methanol content are used. This applies
particularly at low temperatures and if

condensate gets into the mixture – the fuel itself
then segregates (methanol separates from the
gasoline). This process cannot be reversed

even after the temperature has risen again. The
use of such a segregated fuel mix results in
engine running problems and may cause engine

damage.
. Storage life of fuel mix: several months
(approximately 6 months)

. Fuel mix that has been stored for a long period
should be shaken thoroughly before use.

Last Technical Information on STIHL two-stroke engine oil: 23.88

TI_25_1999_01_01.fm

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