Supertest Petroleum
A Canadian petroleum marketing and distribution company that operated from 1923 until its absorption into BP Canada in the early 1970s.
Last updated August 25, 2026
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Overview
Supertest Petroleum was a Canadian petroleum company headquartered in London, Ontario. It was established in 1923 by automobile-service entrepreneur John Gordon Thompson and business partner James D. Good, initially through the purchase of the assets of the Energy Oil Company. The founders began with a modest network consisting of a run-down London service station, a bulk storage facility, and two fuel-delivery trucks, but developed the business into one of the larger independent petroleum marketing networks in Ontario and Quebec. The company adopted Supertest as the trademark for its gasoline and opened its first branded station at 362 Dundas Street East in London on 23 May 1923. Supertest did not initially operate a refinery; it purchased gasoline and lubricants from Imperial Oil and distributed them through service stations, dealers, bulk plants, and delivery operations. During the 1920s it expanded through subsidiary companies and distributing facilities, including operations associated with Hamilton, Ottawa, St. Thomas, Glencoe, Wingham, Seaforth, Port Robinson, and Montreal. Its 1926 consolidation into Supertest Petroleum Corporation Limited created a more unified regional petroleum business. Supertest built its identity around an explicitly Canadian market position. Its later advertising used the slogan “Canada’s All-Canadian Company,” while its maple-leaf branding differentiated it from multinational petroleum competitors. The company introduced branded gasoline grades and products including Hi Compression gasoline and Wonder Gasoline. It also developed marine distribution capacity; the tank ship M.S. Supertest served routes connecting the company’s eastern Canadian markets until it was sold after the Second World War. By 1936, the company reported 342 stations, more than 800 dealers, over 5,000 consumer accounts, more than 100 trucks, and a workforce of over 500 people across Ontario and Quebec. Its activities extended beyond retail fuel sales to bulk petroleum distribution, commercial accounts, lubricants, and related service-station products. Supertest also used community, sporting, and corporate communications programs to strengthen its public profile. These included the Supertest Stake Races, first sponsored in 1944, the company magazine The Maple Leaf, launched in 1945, and the Supertest Ladies Open professional golf tournament, first held in 1966. In the mid-1950s, Supertest opened an exploration office in Calgary, Alberta, reflecting an effort to participate more directly in petroleum production as well as marketing and distribution. By 1971, its production was approximately 3,000 barrels per day, equivalent to about one-tenth of the volume sold through its gasoline stations. The company nevertheless remained primarily recognized by consumers for its branded retail network and petroleum products. BP Canada acquired Supertest in 1971. Following the transaction, the maple-leaf identity was altered to incorporate the BP shield, and the “All-Canadian” positioning was removed. BP progressively replaced the Supertest name and logo, and by the end of 1973 the brand had been phased out from the company’s retail operations. Petro-Canada later acquired BP Canada in 1983 and continued using Supertest as a name for a line of transmission-oil lubricants until approximately 2000, after which those products were renamed PRODURO. Supertest therefore survives primarily as a historical Canadian petroleum brand rather than as an active retail or corporate enterprise.
History
Supertest’s origins date to 13 March 1923, when John Gordon Thompson and James D. Good formed London Automotive Service Ltd. The new company acquired the assets of the Energy Oil Company for $10,000, obtaining a London service station, a bulk storage plant, and two delivery trucks. Thompson became president, while Good served as vice-president and secretary-treasurer. They selected Supertest as the trademark for their gasoline and opened the first Supertest station at 362 Dundas Street East in London on 23 May 1923. The station sold gasoline and Mobiloil lubricants, while the company sourced its petroleum supplies from Imperial Oil rather than refining them itself. The business expanded rapidly through the establishment of regional subsidiaries and bulk-distribution facilities. Subsidiaries appeared in Hamilton and Ottawa in 1924, and Supertest Petroleum Corporation Limited was incorporated on 17 December 1925. A St. Thomas subsidiary and plants in Glencoe, Wingham, and Seaforth followed. In 1926, the company acquired Montreal’s Ensign Oil Company, opened a plant at Port Robinson, Ontario, and consolidated its subsidiaries under the Supertest Petroleum Corporation Limited name. It also registered Hi Compression as a gasoline trademark. In 1928, the M.S. Supertest began carrying petroleum to Kingston, Ottawa, and Montreal, giving the company an additional distribution route. The vessel was sold shortly after the Second World War. Wonder Gasoline was registered as another Supertest trademark in 1932. Between 1928 and 1936, Supertest created additional divisions and expanded its bulk-plant and service-station network across Ontario and Quebec. By 1936 it had 342 stations, more than 800 dealers, over 5,000 consumer accounts, more than 100 trucks, and approximately 60 automobiles. The company employed more than 500 people. This scale made Supertest a significant regional marketer even though its early business model depended on purchased refined petroleum rather than an owned refinery. The company cultivated a national Canadian identity through its maple-leaf emblem and the slogan “Canada’s All-Canadian Company.” Its promotional activities included sponsorship of the first Supertest Stake Races harness event in 1944 and publication of The Maple Leaf, a company magazine launched in 1945. After James D. Good’s death in 1950, the enterprise continued its expansion. During the mid-1950s, it established an exploration office in Calgary, Alberta, indicating a move toward upstream participation. By 1971, production was approximately 3,000 barrels per day, or around 10 percent of the volume sold through its stations. James Gordon Thompson, son of co-founder John Gordon Thompson, served as president from 1960 to 1971. Under his leadership, Supertest also pursued high-profile sports sponsorship. In 1966 it sponsored the first Canadian Ladies Professional Golf Association tournament, the Supertest Ladies Open, at Sunningdale Golf Club in London. The event attracted 50 leading women golfers and competed for the Supertest Trophy. BP Canada purchased Supertest in 1971. The buyer adapted the maple-leaf logo to include the BP shield and removed the “All-Canadian” slogan, signaling the end of Supertest’s independent national positioning. BP completed the phaseout of the Supertest name and logo by the end of 1973. Petro-Canada acquired BP Canada in 1983 and retained the Supertest name for transmission-oil lubricants for several additional years. Those lubricant products were eventually renamed PRODURO, ending the brand’s remaining commercial use described in the available reference material.
- 1973
Retail brand phaseout
[1]The Supertest name and logo were phased out by BP Canada by the end of the year.
- 1971
BP Canada acquisition
[1]BP Canada acquired Supertest Petroleum.
- 1966
Supertest Ladies Open is introduced
[1]The company sponsored the first Canadian LPGA tournament at Sunningdale Golf Club in London.
- 1944
Supertest Stake Races sponsorship begins
[1]Supertest sponsored the first event in its harness-racing program.
- 1936
Regional network reaches 342 stations
[1]The company reported 342 stations, more than 800 dealers, and more than 5,000 consumer accounts in Ontario and Quebec.
- 1926
Subsidiaries are consolidated
[1]Supertest acquired Ensign Oil Company of Montreal and consolidated its operating subsidiaries under one corporate structure.
- 1925
Supertest Petroleum Corporation is incorporated
[1]The company was incorporated as Supertest Petroleum Corporation Limited on 17 December.
- 1923
London Automotive Service is formed
[1]John Gordon Thompson and James D. Good formed London Automotive Service Ltd. and acquired the assets of the Energy Oil Company.
- 1923
First Supertest station opens
[1]Supertest opened its first gasoline station at 362 Dundas Street East in London, Ontario.
Products and positioning
A regionally expanding Canadian petroleum marketer built around branded gasoline stations, dealer distribution, bulk fuel operations, and a distinctly national maple-leaf identity.
Gasoline · 1923
Supertest gasoline
The company’s core retail fuel offering, sold through its branded service-station and dealer network. Supertest adopted the name as a gasoline trademark when operations began in 1923 and marketed the product through a distinctly Canadian visual identity.
Gasoline · 1926
Hi Compression gasoline
A branded gasoline product whose trademark was registered by Supertest in 1926. It formed part of the company’s effort to distinguish fuel grades and products within its growing station network.
Gasoline · 1932
Wonder Gasoline
A Supertest gasoline trademark registered in 1932. The available reference material identifies the product name but does not provide further technical specifications.
Automotive lubricants
Supertest transmission-oil lubricants
After the petroleum retail brand had disappeared, Petro-Canada continued using the Supertest name on transmission-oil lubricants until approximately 2000. The products were subsequently renamed PRODURO.
Marketing campaigns
- 1966Supertest Ladies Open
Canada
Supertest sponsored the first Canadian tournament for the Ladies Professional Golf Association at Sunningdale Golf Club in London, Ontario. Fifty leading women golfers competed for the Supertest Trophy.
Outcome. The event became a prominent example of the company’s sports-marketing strategy, although the supplied material does not document the tournament’s later history.
- 1944Supertest Stake Races
Canada
Supertest sponsored a harness-horse racing event as part of its community and brand-promotion activities.
Outcome. The sponsorship is recorded as an established part of Supertest’s promotional history; the available material does not specify its end date.
Brand decisions
1973
Retire the Supertest retail identityStrategyBackground
Following the BP Canada acquisition, the inherited Canadian identity no longer represented the acquiring company’s broader corporate brand.
Action taken
BP replaced the Supertest branding with BP-associated visual elements and completed the phaseout of the Supertest name and logo.
Aftermath
Supertest ceased to operate as a visible independent retail brand, although the name remained on certain Petro-Canada transmission-oil lubricants until about 2000.
1971
Sell the company to BP CanadaM&ABackground
Supertest had developed a substantial Canadian retail, distribution, and limited production business, but was acquired by the multinational BP organization.
Action taken
BP Canada purchased Supertest Petroleum and assumed control of its operations and brand.
Aftermath
BP incorporated its shield into the former maple-leaf identity, removed the All-Canadian slogan, and phased out the Supertest name and logo by the end of 1973.
Recent events
- 2000
Petro-Canada retires the Supertest lubricant name[1]
Product generation
Following Petro-Canada’s ownership of BP Canada, the Supertest name continued on transmission-oil lubricants until about 2000, when the products were renamed PRODURO.
- 1973
BP Canada phases out the Supertest name and logo[1]
Other
After the acquisition, BP modified the maple-leaf identity and progressively replaced the Supertest name; the brand had been phased out by the end of 1973.
- 1971
Supertest Petroleum is acquired by BP Canada[1]
M&A
BP Canada acquired Supertest Petroleum, beginning the withdrawal of Supertest as an independent Canadian petroleum brand.
Sources2 sources
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