Mobil was running adds for 10w30 HDEO in 2000.
Interesting info. Do you folks have AMOCO gas stations there? Down here now they are called COEN stationsThe first 5w40 I saw around 1974 was Gulf. (I'm a Boomer, raised on the prairies by war vets and depression survivors)
In western Canada, Gulf took over BA gas stations in the late 1960s/early 70s.
Petro-Canada took over Gulf gas/service stations in the 1990s, followed by a feeding frenzy on Gulf Canada's assets.
See WIKI for the story.
SAE 15W was added to J300 in 1975 as per the above post. 15w40s would have been rolled out in late 75 early 76.
No gas stations that I'm aware of, or can find on the web. No BP gas stations either. The BA gas stations I mentioned were British American and Gulf took them over. Anglo was another old petroleum company in Canada. See Wiki for the stories.Interesting info. Do you folks have AMOCO gas stations there? Down here now they are called COEN stations
From what I recall, British Petroleum (BP) formed BP CANADA and bought the Canadian assets of Amoco. The downstream refining assets were later sold to Petrocanada. The upstream assets were spun off as Talisman Energy. Talisman was big in the US Marcellous field. Talisman was purchased by Repsol in around 2014. The oil and gas exploration is now under the Repsol name, AFAIK.No gas stations that I'm aware of, or can find on the web. No BP gas stations either. The BA gas stations I mentioned were British American and Gulf took them over. Anglo was another old petroleum company in Canada. See Wiki for the stories.
It looks like Amoco is active in natural gas and crude oil production in Alberta, Canada.
He can’t remember the exact year, but it was either 1976 or 77 that Rotella 15w40 came out. This was before “T” Rotella. As the T later came out for being okay for Turbo Chargers.
When did 10w30 HDEO’s come around?
Was wondering about this today. Growing up I recall diesel rated straight 30 weights and 15w40bobistheoilguy.com
Very good sir. I Thakn You for the info.He can’t remember the exact year, but it was either 1976 or 77 that Rotella 15w40 came out. This was before “T” Rotella. As the T later came out for being okay for Turbo Chargers.
Amoco 300 came out a little later, in 15w40 meeting the MACK standard at the time.
I understand it was fleet owners that wanted the better mileage, say, when they ran large numbers of trucks. They found they didn’t suffer from wearing out the trucks in the miles they ran them. I suppose there’s all sorts of opinions on that. They would have been highway trucks on long routes where the mileage adds up fast.Other than CAFE reasons, is there any advantage to running 10w-30 over 5w-40?
I think as a group that would hold true, but would also depend on which 10w30 vs which 5w40.Is 10w-30 more shear stable than 5w-40? 10w-30 covers a narrower temp range so I wonder if it would stay in grade better
Way to find out is run the oil then sample the oil. No guess work is needed.Is 10w-30 more shear stable than 5w-40? 10w-30 covers a narrower temp range so I wonder if it would stay in grade better
I don’t buy the CAFE reason at all. Talked to lots of fleet owners and they still use 15w40 since it’s cheaper and easier to get. One fleet owner I see daily tells me his fleet of box trucks already have over 400k on them with 15w40 and quality filters.Other than CAFE reasons, is there any advantage to running 10w-30 over 5w-40?