Anybody use Aspen Petrol?

Soldato
Joined
2 Aug 2012
Posts
7,809
The thread on Supermarket vs Branded fuel in the Motors forum made me think of this.

Does anybody here use Aspen petrol for their garden equipment?

It is quite expensive compared to pump petrol, but unless you live in Blenheim Palace this is unlikely to make much difference over the year with the quantity that one might use.

The main claims are that it contains no Ethanol, Which is better for small engines, And contains no Benzine and almost no Sulphur making it better for the operator (Especially with stuff like chainsaws, hedge cutters, leaf blowers and strimmer's where the exhaust is quite close to your face)

It also claims no to go off over time like pump petrol so can be stored for several years without deteriorating and residual petrol left in equipment over the winter will not gum everything up.

On another note, Aspen produces a 2 stroke pre-mix as well as unmixed 4 stroke.

The 2-stroke ratio is 50:1. Now, I have a number of 2-stroke items with various recommended mixes, none of which is as "Weak" as 50:1. Interestingly one item gives different recommended mixes depending on whether the oil is fully synthetic or not, so I guess the type of oil makes a difference.

What does determine the actual recommended mix for any particular item of 2-stroke equipment? are different 2-stroke engines really that different from one another? (Mind, I am always amazed that 2-stroke works at all really as a way of lubricating an engine :p )

Aspen however claims that their own 2-stroke at a 50:1 mix is nevertheless suitable for "All" 2 stroke equipment. I suppose this is credible given the somewhat different chemical composition of both the base petrol and the oil used, and the fact that Aspen has been around for a long time. Being able to run a 50:1 mix would certainly make my 2-stroke equipment a lot cleaner than at present.

I have not been using Aspen up till now, but once the lockdown ends I may try it out to see whether there is a noticeable difference, But it would be interesting to know if anybody else is a regular user and if so what you experience is (Especially as regards the 2-stroke)
 
I’ve had two 2-stroke engine carbs die because the rubber diaphragm was eaten by ethanol. I was was unaware of the problem and hadn’t drained the tanks after usage. Now I’m draining after every use. Maybe higher quality engines have better parts but my cheap engines certainly don’t like the ethanol in fuel.

I agree unless you are using machines a lot or you find emptying the tanks too onerous ethanol free petrol is a luxury. But the cost and pain of replacing carb parts has its cost too.
 
My neighbour uses Aspen in his Lawn mower. I weighed it up and ended up buying an additive for unleaded that is supposed to stop the fuel from gumming up etc. over winter.
Left the mower fueled up over winter and it was fine but the testing is over several winters I suppose.
I don't know if an additive is suitable for unleaded in a 2-stroke.
 
All 2 strokes are 50:1 and 25:1 it just depends on the quality of oil used. Stihl products state 50:1 on the fuel cap but reading the manual it tells you use Stihl 2 stroke oil if you use another inferior product then mix to 25:1.
 
I use Aspen in all my 2 stroke tools after having some issues with regular pump fuel.

I don't use it in my push or ride-on mowers though as it would bankrupt me, and I haven't experienced any issues with fuel in 4 stroke engines. Just run them dry at the end of season.
 
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