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Old 01-06-2015, 05:48 PM   #1
MotoSkates
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Chevron gas making my bike run hot?

I usually put Velaro premium gas into my z1000 but today I filled up with Chevron Premium. I noticed that it smelled like gas mixed with fertilizer or ant bed killer or something rank...Like sulfur smelling, it just didn't smell right. Didn't think much of it until about 15 miles later I was cruising at about 35mph and my temp gauge was at 205. I was curious because my bike hasn't gotten over 200 since like October, usually stays in the 180's on these winter days but it was randomly hot.

At a stop light it got up to 221, the hottest I've ever seen it before that was 218. I just got home and checked and smelled all over the bike for leaky coolant and couldn't find anything. I always thought that gas station "cleansers" were snake oil, but if there really is something to Chevon's techron than it smells horrible and its making my bike run 25+ degrees hotter than it has in the last few month.

Anyone else ever have a sudden jump in average engine temp?
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Old 01-06-2015, 06:15 PM   #2
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Very weird especially on a cool day like this, couldn't see additives or higher combustion raising it 25 degrees though . Have you checked your coolant level and see what the plugs look like? How is it running ?
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Old 01-06-2015, 06:42 PM   #3
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FWIW, none of the temps you listed are out of range for "normal" coolant temp on a typically motorcycle engine.

That's not to say you didn't pick up a tank of old stale premium. I'm not too particular about exactly brand name of gas station, as much as making sure it's a high traffic one that keeps the stock fresh.

BTW, neither one of your bikes really needs premium... especially in this cool weather.
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Old 01-06-2015, 06:47 PM   #4
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Very odd since I can see no real reason why the gas caused it to run hotter than normal. I wonder if something else happened and its a coincidence that it's right when you filled up. Drain the gas and fill up with Valero and see what happens.
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Old 01-06-2015, 06:52 PM   #5
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Quote:
Originally Posted by Volfy View Post
That's not to say you didn't pick up a tank of old stale premium.
It was the chevron on Smith street in Midtown. High traffic and lots of cars in the area that would take super.

I'm going to keep running this tank and if it gets any higher than I'll drain it.
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Old 01-06-2015, 08:16 PM   #6
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It's fine. Really. Higher octane than necessary can cause a little more heat. As said above, you're still in normal range. Btw Valero gas is compared to Exxon, shell, and chevron.
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Old 01-06-2015, 08:24 PM   #7
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I worked at Valero and will agree. I religiously get Exxon but only because of the 10% employee discount.
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Old 01-06-2015, 08:55 PM   #8
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A 30* rise in temperature wasn't caused by the gasoline in your tank...
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Old 01-06-2015, 08:55 PM   #9
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Valero is good in your lawnmower
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Old 01-06-2015, 09:42 PM   #10
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Old 01-06-2015, 10:06 PM   #11
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Quote:
Originally Posted by Sudo View Post
Did you use the green handle?
But it's yellow at Valero.

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Old 01-06-2015, 10:26 PM   #12
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Quote:
Originally Posted by Sudo View Post
Did you use the green handle?

Yeah I thought that was the environmentally friendly gas, like the ethanol stuff or whatever it is.


All joking aside I just got back from a ride and it stayed in its normal 180-195ish range. Weird. Today it was climbing up 3 and 4 digits at a time all the way to 221. Whatever, I looked at the manual and the temp warning doesnt come on until 245 so I'm not worried about it
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Old 01-06-2015, 11:22 PM   #13
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About the only way premium vs. regular might affect engine temp is if the ECU is equipped with knock sensor(s) and can close-loop advance/ ignition timing. Even then, you'd have to force the engine into high-load to hit the knock threshold, before you'll see/measure any difference.

I dare say a lot of the digital readout of coolant temps on bikes are set up for entertainment purpose mostly. Mfrs purposely locate the sensing unit so guys can ogle at the numbers as it swing up and down as the thermostat opens and closes... and argue about which whizbang $6/qt coolant lowers the engine temp the most.

Set it up like the typical car coolant gauge, where the needle NEVER moves, would take all the fun out of it.
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Old 01-06-2015, 11:40 PM   #14
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Quote:
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A 30* rise in temperature wasn't caused by the gasoline in your tank...
This guy ^^^ doesn't know squat about petroleum. Wouldn't listen to him. No how, no way.
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Old 01-07-2015, 07:12 AM   #15
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Quote:
Originally Posted by MotoSkates View Post
I usually put Velaro premium gas into my z1000 but today I filled up with Chevron Premium. I noticed that it smelled like gas mixed with fertilizer or ant bed killer or something rank...Like sulfur smelling, it just didn't smell right. Didn't think much of it until about 15 miles later I was cruising at about 35mph and my temp gauge was at 205. I was curious because my bike hasn't gotten over 200 since like October, usually stays in the 180's on these winter days but it was randomly hot.

At a stop light it got up to 221, the hottest I've ever seen it before that was 218. I just got home and checked and smelled all over the bike for leaky coolant and couldn't find anything. I always thought that gas station "cleansers" were snake oil, but if there really is something to Chevon's techron than it smells horrible and its making my bike run 25+ degrees hotter than it has in the last few month.

Anyone else ever have a sudden jump in average engine temp?
You're not getting a lot of air flow at 35mph, especially if there happened to be a tail wind. Cruising at 70+mph in unobstructed air is a better reference for how your cooling system is performing.
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