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Environmentally adapted two-stroke engine oils
Sales points
Further reading


General

There are around 1.3 million leisure boats and more than 600 000 outboard motors in Sweden. Most of these are traditional two-stroke engines that have inefficient combustion. Between 20 and 30 percent of the fuel mix in these motors ends up uncombusted in the water. And the fuel that does burn in the engine is converted into toxic or carcinogenic substances in a higher proportion than from a four-stroke engine.

Each year 15 000 tons of hydrocarbons are emitted from outboard motors on leisure boats in Sweden. Around half of these emissions remain in the water in small droplets. Outboard motors are mostly used in a short season that is coincides with the time when aquatic life is most sensitive. These motors are often driven in calm, shallow inlets where the rejuvenation of many water organisms takes place.

The idea of running two-stroke engines on a much cleaner fuel was raised in a report entitled 'Mindre gift på drift' which was written as part of the Swedish Government´s 'Archipelago project' (Skärgårdsuppdrag). This fuel is alkylate petrol. The fundamental idea was to use the cleanest available fuel for the most polluting engines.

Alkylate petrol is free from aromatic hydrocarbons and olefins. This means that the emissions of carcinogenic, persistent and toxic polyaromatic hydrocarbons (PAH) are up to 90% lower than with conventional fuel. Furthermore, alkylate petrol has a lower emission of nitrogen oxides and a smaller contribution to the creation of ground-level ozone.

Alkylate petrol works well as a fuel in two-stroke engines. Independent tests have even shown that engines show better performance, clean idling and lower smoke generation than the conventional fuel. It is, however, important to regularly check the gasket and pipe work in order to avoid leaks.

Alkylate petrol is a high quality product with limited availability. It is somewhat more expensive to produce than conventional petrol and in the past it has had a higher tax. After intensive pressure from, amongst others, environmental and boating organisations, the government reduced tax on alkylate petrol by a total of 1.85 kr/litre from the 15th November 2002. This means that the cost of a litre of alkylate petrol at the pump is just a little higher than for 95 octane petrol.

So far the share of alkylate petrol sold to two-stroke outboard engines hasn´t markedly grown. One reason is that the Swedish oil companies hasn´t fulfilled their commitment to significantly increase the offering of alkylate petrol for sale from petrol pumps. The Swedish Minister of Environment has put a pressure on the companies to fulfil a promise that was given in connection with the tax reduction.

The project Grön Kemi is collaborating with "Miljösamverkan i Väst" trying to enchance the offering and use of alkylate petrol on the west coast of Sweden.


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Environmentally adapted two-stroke engine oils

A traditional two-stroke engine needs 1-2% engine oil added to the petrol. Usual two-stroke oils are mixture of mineral oil, solvents and a number of performance-enhancing additives. In the environment, mineral oil is slow to degrade and the additives can be toxic, persistent and can bioaccumulate. Much of the oil added to two-stroke engines leaves the engine partially or completely uncombusted.

However, there are products on the market whose ingredients are more easily degraded and the additives have a lower toxicity. The 'Clean Lubricants' (Ren Smörja) project in Gothenburg has undertaken an independent review of environmentally adapted two-stroke oils on the Swedish market. The following product fulfilled the environmental and health criteria:

Aspen Outbordolja
Cargo Poly-Twin
Castrol Biolube 100
Mobil 1 Outboard
OK Q8 Marin Bio TT
Q8 Marin Bio
Quaker State Synquest Outboard& Snowmobile
Shell Nautilus Biodegradable Outboard Oil TC W3
Statoil Aqua Way Bio
Texaco Motex Bio Outboard
Valvoline Syn Power Outboard 2T

All of these oils fulfil the highest technical standards for outdoor motor oils NMMA TC-W3. It should be pointed out though, that it is the oil producers that have the full responsibility for their products. The products listed above should only be used for 2-stroke outboard motors unless otherwise is indicated.

Of course, using one of the oils in the list above in combination with alkylate petrol is the best solution for the environment.

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Sales points in Sweden

Alkylate petrol can be purchased at the sales points shown in the list below. Generally, the alkylate petrol with added oil which is dispensed from these pumps is meant for air-cooled two-stroke engines such as chainsaws. The exception to this statement is fuel from OK, where the alkylate petrol is mixed with a universal oil that suits both water and air-cooled engines.

Alkylate petrol currently costs 10.64 kr/litre (2004-11-17) which is around 0.5 - 1 kr more than normal 95 octane petrol. The price of petrol is a ever-changing parameter though. As consumption of alkylate petrol increases, the price per litre can decrease.

The fuel suppliers listed below are shown in alphabetical order according to oil company and then town. This list will be continuously updated as more and more companies and sales points are in the process of adding alkylate petrol from petrol pumps to their product offer.

   
Aspen

Alingsås
Borås
Bromma
Brålanda
Föllinge/Åkersjö
Förslöv
Göteborg
Hallstavik
Hässleholm
Kinna
Laholm
Mariestad
Motala
Nybro
Nynäshamn
Nässjö
Osby
Oviken
Ronneby
Sandviken
Sjöbo
Skövde
Stenungsund
Stockholm
Svenljunga
Sysslebäck
Tibro
Tjörn
Torsby
Trollhättan
Trollhättan
Ulricehamn
V:a Frölunda
Varberg
Vittsjö
Åmål
Åre
Åseda
Åtvidaberg
Ödåkra
Östersund

Gustavsson& Hernbo Maskin
Enanders
Bromma Skog och Trädgård
Brålanda Motorsågar
Annsettens Fjällstation
N.P.Nilssons Trävaru
Entreprenadbutiken
Pelles Service AB
TK Service
Granngården
Liljeqvists Motorer AB
Skogs- och landskapsservice
Sefir AB
Maskinaffären
Stefan Olsson AB
Åhlin´s Järn AB
Såg& Motor
Gläftåvallen Fjällanläggningar AB
Ronneby Maskin
Bärnö Trädgårdscenter
Bepps
LJ Söderströms Cykel& Maskin
Micro Marina
Södermalms Trädgårdsmaskiner
Finnskoga motorservice
Börje Karlsson
Skog och Trädgård
Mossholmens Marina
Mats Skog och Fritid
Maskinakuten
Trollhättan Utegolv
Rask Såg& Motor
Wahlborgs Marina AB
Stål& Hyrmaskiner
Arnes Motortjänst
Höglunds Järn
Åre Skotersafari
Börjes Tankcenter
Åtvidaberg Cykel och Motor
VBM Vilhelmsson
Kjell Jonsson

Skruvg. 3
Landalag. 4
Flygplats/Infarten 2
Kullen 585

Stationsv. 9
Ringön
Lundåsv. 2
Helsingborgsv. 12
Näs Industriområde
Industrig. 14 A
Förrådsg. 45
Turbinv. 2
Lyckv. 3
Åkerv. 8
Rådhusgatan 2
Osby
Gläftåvallen
Sörbyv. 8
Tuppv. 7
Verkstadsg. 12
Gustav Adolfsg. 3
Norra Hamnplan
Elektrav. 1
Industrig. 13
Bränningen 3573
Snickerig. 1
Bleket
N. Industrig. 6
Magnetg. 1
Verkmästarev. 26
Daltorp. 11
Hinsholmskilen
Vagnv. 5
Hässleholmsv. 28
Fågelmyrsv.
Årestrand
Järnvägsgatan 47
Adelsvärdsg. 14
Djurhagshusv. 325
ope 175

OK Q8 Station  

Arlanda
Falun
Kåge
Kållered
Norberg
Norrtälje
Skellefteå
Sundsvall
Svenstavik
Timrå
Uppsala
Vindeln
Vällingby
Västerås
V:a Frölunda

Arlanda stad
Falun Tryckerivägen
Kåge Drängsmark
Kållered Ekenleden
Norberg Malmgatan
Norrtälje Stockholmsvägen
Skellefteå Mackvägen
Sundsvall Gillersbergsgatan
Svenstavik
Timrå Vitögatan
Uppsala Bernadottevägen
Vindeln Hökvägen
Vällingby Jämtlandsgatan
Västerås Österleden
Västra Frölunda Bärnstensgatan

Servog. 12
Tryckeriv.
Drängsmark 108
Ekenleden 1
Malmg. 12
Stockholmsv. 51
Mackv. 5 , E4
Gillersbergsg. 1

Vitög. 1
Bernadottev. 5
Hökv. 2
Jämtlandsg. 139-143
Österleden 2
Bärnstensg. 3

OK Alkylate petrol for two-stroke outboard engines  

Boden
Bollnäs
Borlänge
Föllinge
Gagnef
Gävle
Hammerdal
Junsele
Kramfors
Krylbo
Köping
Ljusdal
Luleå
Malung
Mora
Orsa
Rättvik
Skara
Smedjebacken
Sollefteå
Strömsund
Sveg
Söderhamn
Östersund

Boden Brogatan
Bollnäs Fabriksgatan
Borlänge Masergatan
Föllinge Långgatan
Gagnef Industrivägen
Gävle Brynäsgatan
Hammerdal Sikåsvägen
Junsele Köpmannagatan
Kramfors Högstavägen
Krylbo Folkaregatan
Köping Hultgrensgatan
Ljusdal N. Järnvägsgatan
Luleå Hertsövägen
Malung Backselevägen
Mora Vasagatan
Orsa Lisselhedsvägen
Rättvik Riksvägen
Skara Skaraborgsgatan
Smedjebacken Bäverstigen
Sollefteå Storgatan
Strömsund Näsviken
Sveg Vallarvägen
Söderhamnn Norralagatan
Östersund Rådhusgatan

Brogatan 32
Fabriksg. 2
Maserg. 1
Långg. 13
Industriv. 2
Brynäsg. 54
Sikåsv. 2
Köpmannag. 6
Högstav. 1
Folkareg. 50
Hultgrensg. 8
N. Järnvägsg. 60
Hertsöv. 11
Backselevägen
Vasag. 1
Lisselhedsv. 750
Riksv. 26
Skaraborgsg. 70
Bäverstigen 1
Storg. 139
Näsviken
Vallarv. 5
Norralag. 34
Rådhusg. 88

Preem    

Borås
Dalarö
Stockholm
Svenljunga

Borås Hultagatan
Dalarö
Hornstulls strand
Svenjunga Nylännesgatan

Hultag. 49
Hotellbryggan
Hornstulls strand 6
Nylännesg. 1

Shell    

Nynäshamn
Sandhamn


Fiskebryggan
Sandhamn

Statoil    

Bullandö
Dalarö
Dalarö
Gräddö
Göteborg
Husarö
Kymendö
Norrtälje
Skärholmen
Strängnäs
Södertälje
Utö
Vaxholm
Vindö
Örsö





Styrsö Marina



Sjöstation Sätra





Dalarövarvet
Hotellbryggan

Styrsö Tången


Spillersboda
Småbåtshamnen
Gästhamnen
Gästhamnen
Gruvbryggan
Sjöstationen
Sollenkroka brygga

Other

 

 

Mariestad
Lysekil

Hamnmagasinet

Hamngatan 26
Södra hamnen

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Further reading (unfortunately only in Swedish)

Ahlbom, J. Duus, U. 1999. Mindre gift på drift. Rapport från Kemikalieprojektet inom ramen för Skärgårdsuppdraget. Länsstyrelsen i Västra Götaland Rapport nr 1999:37, Göteborgsregionens kommunalförbund.

Alin, J. Astnäs, T. 2001. Jämförande studie av utombordsmotorers emissioner till vatten. Avd. för kemisk miljövetenskap. Chalmers Tekniska Högskola, Göteborg.

Balk et.al. 2002. Undersökningar av kondensat bildat i kölvatten från båtar med utombordsmotorer - kemiska analyser och biologiska effekter. Laboratoriet för akvatisk ekotoxikologi, Institutet för tillämpad miljöforskning (ITM), Stockholms Universitet.

Naturvårdsverket. 2002. Regeringsuppdrag .Alkylatbensin till 2-taktsmotorer. Naturvårdsverket 25 jan. 2002.

Ren Smörja i Göteborg. 1997. Health- / environmental criteria for 2-stroke engine oils. Criteria document. Göteborgsregionens kommunalförbund, Göteborgs Stads Miljösekretariat, Miljöteknikdelegationen.

SPI. 2003. Alkylatbensin för 2-taktsmotorer. Det bästa bränslet till de äldre motorerna. Broschyr från SPI i samråd med Naturvårdsverket, Svenska Båtunionen och SweBoat

www.sjofartsverket.se/alkylatpump

 
 
publisher: projekt GRÖN KEMI