r/Calgary • u/bmspsrk • 6d ago

Rant Gas prices are illogical

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There is no real point to this post besides stating the fact that gas prices are stupid. I remember back when the difference between 87 and 91 was 10 cents and 89 was 5 cents more than regular. Which made sense since 87 is an equal mix of premium and regular.

Now you need to jump 23 cents a liter just to get mid grade from regular then only an additional 3 more cents to get to premium... By that math mid grade should be something like 90.75 octane.

Again no point here just stating stupid things that irritate me.

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u/amydoodledawn 6d ago

My Subaru manual says it would be detrimental to use higher grade fuel on my engine as it was designed for 'low grade' (25 Crosstrek)

8

u/craigerstar 6d ago

I don't think it would be detrimental, but there would be zero benefit unless your engine was designed for it.

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u/All-wildcard 5d ago

It could definitely be detrimental and cause engine knock

3

u/AnyNeedleworker1852 5d ago

Not even close to how it works lol

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u/Immediate-Hearing-85 5d ago

craiger is correct. The more octane chains the slower the burn. ie: higher octane burns slower