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  #13  
Old 03-07-2013, 07:46 AM
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Re: Diesel - Shell, Caltex, BP, Mobil or 711?

I have been using BP Ultimate 99% of the time. On the weekend I had to use standard Shell (premium not available at Rainbow Beach) and I noted consumption was considerably higher with the standard diesel at 10.2L/100km with 90% highway driving. On the trip to Sydney last December (with Ultimate) and 95% highway driving I got 7.8L/100km. That difference even sounds excessive to me but I think premium does make a difference in the JGC and is worth the extra few cents.
I used Ultimate (unleaded) in my sprint kart going back some years after testing other premium fuels and it was a standout for keeping the two stroke clean. So maybe I am biased because of that...
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  #14  
Old 03-08-2013, 01:35 AM
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Re: Diesel - Shell, Caltex, BP, Mobil or 711?

Quote:
Originally Posted by GlennR View Post
Good find Bob. Whats the thoughts on adding further additives.....a few guys in the office swear by it, claiming more kms per tank but not sure of the compatibility with hp CRDs. ...They reckon it increases the cetane level that I am about to google because I have no idea about cetanes, how much they are and where to buy them!!!!!
I did that sort of thing in my younger days when oils and fuels were basic but these days quality oils and fuels are such highly complex concoctions that I avoid it. Also, with litigation the way it is, I suspect many additives are designed more to do no harm than to do any good. You might remember the STP oil improvement products that proved to be little more than just oil. There may well be good products out there but unless it is backed by valid and reproducible data, one has nothing but someones anecdotal impression and we know how unreliable that can be.
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  #15  
Old 03-08-2013, 06:39 PM
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Re: Diesel - Shell, Caltex, BP, Mobil or 711?

OK, but what about 2 stroke as an additive. Heard great things with it's enhanced lube properties, quieting down the engine, better fuel consumption and prolonged life. (Engine I mean, not imortality!!)
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  #16  
Old 03-08-2013, 07:32 PM
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Re: Diesel - Shell, Caltex, BP, Mobil or 711?

2 stroke is simply petrol with an oil mixture. May as well pour some 2 stroke oil into your tank, then watch the smoke in the exhaust.
As for additives, surely if the additive comes in a shiny stainless steel can, with an aluminium ringpull top, as well as have some bright red writing on the sides, it MUST BE BENEFICIAL.
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Old 03-08-2013, 10:36 PM
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Re: Diesel - Shell, Caltex, BP, Mobil or 711?

I wouldn't even contemplate adding any sort of additive to the JGC diesel. Why would you want to risk shortening the life of your DPF? That is half the reason that the oils for the CRD are so expensive, so the minuscule amounts of oil that are burnt through combustion does not effect the DPF.
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  #18  
Old 03-11-2013, 03:01 AM
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While running his tour business with a variety of 4 and 6 cylinder diesels my old man tried out a variety of diesel, from the major suppliers to the independents. In the end Shell and BP came out about even followed by Caltex. He didn't have anything nice to say about the independents, they ended up giving significantly worse fuel economy, as much as an extra half a tank or more usage on identical trips.

For me it is Shell, BP or Caltex, but that is because my lease company gives me a fuel card from those three.
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Old 03-11-2013, 05:57 PM
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Re: Diesel - Shell, Caltex, BP, Mobil or 711?

There was an independent in Blacktown who was selling a very good diesel blend.
However, it was found that what he was selling was stolen fuel from tanker drivers from the major brands, who were skimming their loads.
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  #20  
Old 03-12-2013, 06:35 PM
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Re: Diesel - Shell, Caltex, BP, Mobil or 711?

I've been getting Shell diesel a Wahroonga since I've had the car but I've always wondered why it was labelled simply "diesel" since we get very few trucks there. So I contacted Shell. They advised that they produce both "diesel" and "diesel extra" with both being suitable for both trucks and cars but diesel extra is always labelled "diesel extra". So I might be looking elsewhere for fuel. I'd feel happier getting the nicer stuff, if a bit dearer, for my pride and joy. Ironically, "diesel extra" is touted as ideal for heavy trucks and the mining industry because of its injector cleaning properties claimed to provide a 3% long term increase in fuel efficiency.

Update: I asked Shell what "Diesoline 10" is. They replied as follows:
"Diesoline 10 is standard low sulphur Diesel - not sure why the TDS call it Diesoline 10. The specifications for Diesel & Diesel Extra are the same - it is the additive package ie surfactants / anti oxidant / etc that is different."
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Old 03-13-2013, 12:45 AM
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Re: Diesel - Shell, Caltex, BP, Mobil or 711?

Usually there is a differenec in the Centane value between normal diesel and premium diesel.
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Old 03-13-2013, 04:36 AM
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Re: Diesel - Shell, Caltex, BP, Mobil or 711?

Quite honestly in Brisbane there is only one refinery so all diesel comes out of the smae place
Best to make sure you buy it from a high flow service station
Fresher fuel
Never fill up when they are filling the tanks either
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  #23  
Old 03-13-2013, 08:05 AM
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Re: Diesel - Shell, Caltex, BP, Mobil or 711?

Just a point, albeit a small one, just because they have one refinery, don't think that all products are the same.Think of it like a brewery.

They can produce quite a few different brews, and in some cases additives etc are added at an intermediate facility or added to order.
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Old 03-13-2013, 05:41 PM
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Re: Diesel - Shell, Caltex, BP, Mobil or 711?

As I understand it, a refinery produces only one "brew". That goes out either as standard and sold under various brands, or it gets a squirt of this and squirt of that to a particular brand's specification and is sold as that brand's premium blend. So, yes they are different and may perform differently but the basic brew is the same. In the end it amounts to same thing. Marketers want to differentiate their product but more often than not, the difference is far less than they would have you believe. Marketing psychology is a powerful tool indeed.

However, with so many Australian refineries closing, we are going to find increasing imports from various parts of Asia. We will have to be on our guard because despite the best efforts of importers, I expect quality and performance to vary significantly.
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