Oil – You get what you pay for!
Discussion
Costs of synthetics vary considerably. The most expensive are the “Ester” types originally only used in jet engines. These cost 6 to 10 times more than high quality mineral oils.
The cheapest synthetics are not really synthetic at all, they are dug out of the ground and not manmade. These are in fact specially refined light viscosity mineral oils known as “hydrocracked” oils.
“Hydrocracked” oils have some advantages over their equivalent mineral oils, particularly in lower viscosity motor oils such as 5w-30 and 5w-40 and they cost about 1.5 times more than good quality mineral fractions. This is the “synthetic” which is always used in cheap oils that are labelled “synthetic”.
So, why are these special mineral oils called “synthetic”?
Well, it all came about from a legal battle that took place in the USA more than ten years ago. Sound reasons (including evidence from a Nobel Prize winning chemist) were disregarded and the final ruling was that certain mineral bases that had undergone extra chemical treatments could be called “synthetic”.
Needless to say, the marketing executives wet their knickers with pure delight! They realised that this meant, and still does, that the critical buzz-word “synthetic” could be printed on a can of cheap oil provided that the contents included some “hydrocracked” mineral oil, at a cost of quite literally a few pence.
So, the chemistry of “synthetics” is complex and so is the politics. The economics are very simple though.
If you like the look of a smart well-marketed can with “synthetic” printed on it, fair enough, it will not cost you a lot; and now you know why this is the case, it’s really only a highly processed mineral oil.
But, if you drive a high performance or modified car, and you intend to keep it for several years, and maybe do the odd “track day” or “1/4 mile”, then you need a genuine Ester/PAO (Poly Alpha Olefin) synthetic oil.
These oils cost more money to buy, because they cost a lot more money to make.
Very simply, you always get what you pay for, cheap oils contain cheap ingredients, what did you expect!
The cheapest synthetics are not really synthetic at all, they are dug out of the ground and not manmade. These are in fact specially refined light viscosity mineral oils known as “hydrocracked” oils.
“Hydrocracked” oils have some advantages over their equivalent mineral oils, particularly in lower viscosity motor oils such as 5w-30 and 5w-40 and they cost about 1.5 times more than good quality mineral fractions. This is the “synthetic” which is always used in cheap oils that are labelled “synthetic”.
So, why are these special mineral oils called “synthetic”?
Well, it all came about from a legal battle that took place in the USA more than ten years ago. Sound reasons (including evidence from a Nobel Prize winning chemist) were disregarded and the final ruling was that certain mineral bases that had undergone extra chemical treatments could be called “synthetic”.
Needless to say, the marketing executives wet their knickers with pure delight! They realised that this meant, and still does, that the critical buzz-word “synthetic” could be printed on a can of cheap oil provided that the contents included some “hydrocracked” mineral oil, at a cost of quite literally a few pence.
So, the chemistry of “synthetics” is complex and so is the politics. The economics are very simple though.
If you like the look of a smart well-marketed can with “synthetic” printed on it, fair enough, it will not cost you a lot; and now you know why this is the case, it’s really only a highly processed mineral oil.
But, if you drive a high performance or modified car, and you intend to keep it for several years, and maybe do the odd “track day” or “1/4 mile”, then you need a genuine Ester/PAO (Poly Alpha Olefin) synthetic oil.
These oils cost more money to buy, because they cost a lot more money to make.
Very simply, you always get what you pay for, cheap oils contain cheap ingredients, what did you expect!
opieoilman said:
Needless to say, the marketing executives wet their knickers with pure delight! They realised that this meant, and still does, that the critical buzz-word “synthetic” could be printed on a can of cheap oil provided that the contents included some “hydrocracked” mineral oil, at a cost of quite literally a few pence.
IIRC, in the U.S. these oils have to be labeled "synthetic blend".Do you have such in the U.K.?
Edited by Trooper2 on Thursday 24th May 23:33
Trooper2 said:
opieoilman said:
Needless to say, the marketing executives wet their knickers with pure delight! They realised that this meant, and still does, that the critical buzz-word “synthetic” could be printed on a can of cheap oil provided that the contents included some “hydrocracked” mineral oil, at a cost of quite literally a few pence.
IIRC, in the U.S. these oils have to be labeled "synthetic blend".Do you have such in the U.K.?
Edited by Trooper2 on Thursday 24th May 23:33
Cheers
Guy.
Endut day, Castrol R is still Castrol R.
I'm a chemist and I can see there is a lot of bullshit involved.
You have to change it regularly and most filth does the job in these circumstances. It seems that people like my mum expect their full race, semi trackday car to go 100,000 miles without even looking at the oil as par for the course. If you want a good lubricant for an extreme job, sadly you will have to keep an eye on it and change as dictates, it will be pricey, but hey, what's the cost of a billet crank and extreme valvegear again.
Castrol R seems the way to go with an extreme engine but the flipside is that you have to keep an eye on it all and clean it when you take it to bits again.
I'm a chemist and I can see there is a lot of bullshit involved.
You have to change it regularly and most filth does the job in these circumstances. It seems that people like my mum expect their full race, semi trackday car to go 100,000 miles without even looking at the oil as par for the course. If you want a good lubricant for an extreme job, sadly you will have to keep an eye on it and change as dictates, it will be pricey, but hey, what's the cost of a billet crank and extreme valvegear again.
Castrol R seems the way to go with an extreme engine but the flipside is that you have to keep an eye on it all and clean it when you take it to bits again.
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