Does 95 have more cleaning agents than 93?

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Ockie

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I have seen some youtube videos where it is mentioned that premium fuel (for us that means 95 I guess), contains more cleaning agents. Is this true? Reason why I ask is because the Tata guy told me that my Bolt XT should use 93 for best fuel economy, but every 3 months or so, I should fill up with 95 to clean up the engine. I thought the only difference between the two is that 95 allows for higher compression, but other than that, is exactly the same as 93?
 
High octane does not equate to premium. I doubt there are extra cleaners in our 95.
 
Ockie said:
I have seen some youtube videos where it is mentioned that premium fuel (for us that means 95 I guess), contains more cleaning agents. Is this true? Reason why I ask is because the Tata guy told me that my Bolt XT should use 93 for best fuel economy, but every 3 months or so, I should fill up with 95 to clean up the engine. I thought the only difference between the two is that 95 allows for higher compression, but other than that, is exactly the same as 93?
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I doubt it. 'Premium' normally means branded like Shell or BP, compared to 'store brand' like Tesco or ASDA.

If the Bolt still uses the original euro 3 spec engine that the mk1 indica had, 93 will be fine. I always wish I could get 93 at the cost. I waste money on 95 each time I fill up.
 
95 has a higher compression peak so the higher octane fuel theoretically means higher performance, check the user manual to see what is recommended by the manufacturer, don't take some salesman's word for it.
 
Drake2007 said:
95 has a higher compression peak so the higher octane fuel theoretically means higher performance, check the user manual to see what is recommended by the manufacturer, don't take some salesman's word for it.
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Never heard that higher octane fuel = higher performance.
Octane rating is a representation of how much fuel can be compressed before before it explodes on it's own. What I have heard is that if you put higher octane fuel in a "normal" engine, it may have detrimental effects, since the engine will have a harder time combusting the higher octane fuel. Being a pilot, I've flown with a variety of fuels, some well below 90 and some deep into the 100s. Have never noticed a performance difference (digitally from engine monitoring equipment or from a sensory point of view). But maybe I'm just not aware of something...
 
Ockie said:
I have seen some youtube videos where it is mentioned that premium fuel (for us that means 95 I guess), contains more cleaning agents. Is this true? Reason why I ask is because the Tata guy told me that my Bolt XT should use 93 for best fuel economy, but every 3 months or so, I should fill up with 95 to clean up the engine. I thought the only difference between the two is that 95 allows for higher compression, but other than that, is exactly the same as 93?
Click to expand...
The Bolt XT is turbocharged though, surely it should be taking 95?

My Clio says strictly 95 or 98.
 
Idiosyncratic said:
Never heard that higher octane fuel = higher performance.
Octane rating is a representation of how much fuel can be compressed before before it explodes on it's own. What I have heard is that if you put higher octane fuel in a "normal" engine, it may have detrimental effects, since the engine will have a harder time combusting the higher octane fuel. Being a pilot, I've flown with a variety of fuels, some well below 90 and some deep into the 100s. Have never noticed a performance difference (digitally from engine monitoring equipment or from a sensory point of view). But maybe I'm just not aware of something...
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Theoretically

https://www.aa.co.za/about/press-room/press-releases/9593-what-is-the-difference-reallyij.html

basically it's not just the octane but also find the petrol brand that your car responds best to.
 
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Tsepz_011 said:
The Bolt XT is turbocharged though, surely it should be taking 95?

My Clio says strictly 95 or 98.
Click to expand...

I dont think so. I watched a short clip where a guy from Ford was talking about the Ecoboost engine, and there he said the idea of all turbocharged engines needing premium fuel no longer rings true.
 
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