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My first oil change is free too, and they claim to use full synthetic, so I will go that route. Still may choose to add some Liquid-Moly after removing a little oil. I researched their website....they have a large variety of additives. A further search revealed an article about a special gas additive they developed for hybrid vehicles (not interested at the moment). There was an email contact with that article, so I wrote to ask about a special OIL additive for hybrids. Here's their response:

When it comes to protect a hybrid engine from wear and tear, there is no major difference to conventional engines. You may use MoS2 Anti Friction EngineTreatment (#2009), though we usually recommend the more effective Cera Tec (#20002) for modern engines.

Freundliche Grüße / Best regards

Further reading about the Cera Tec product did not convince me, so not sure for now which way to go. May end up getting the older 2009 product and splitting between my two vehicles for a modest boost.
 

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Further reading about the Cera Tec product did not convince me, so not sure for now which way to go. May end up getting the older 2009 product and splitting between my two vehicles for a modest boost.
Just my opinion... but I'd personally lean more toward the known/existing variety of their engine treatment, which it sounds like you're leaning toward as well.
 

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Anybody know how to improve winter gas? Maybe an octane booster?i want to take advantage of the colder temps and no AC use to maximize mpg..

Also kind of off-topic , but does anyone use Lucas, Chevron, etc fuel system cleaners? I have a bunch of big Lucas bottles I got for free so I’m going to start using it.
 

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I wouldn't think an octane booster would help, especially if you deal with cold temperatures. Octane rating = resistance to detonation. Higher octane fuel is actually harder to burn than lower octane fuel. If you check out the thread, winter-gas-effect-mpg you'll find tips on how to maximize fuel economy in the winter.

Check air pressure in tires.
Don't idle, don't "pre-warm" car.
Try to minimize use of cabin heat.
Try to take less longer trips, than frequent short trips.

Just to name a few.
 

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Had my Insight TOURING trim for about 1yr now. 40k miles 😊.
I drive 142 miles round trip everyday (home- work-home).
I plan on keeping her for 200k miles.

Besides oil changes,
what fuel and engine additives are you guys using? Ive used Techron from Pep boys on my last 100k mile vehicle.

Any other advice & opinions?
Thank you
 

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The Honda recommendation for fuel is "top tier" unleaded gas with 87 octane or higher and no more than 15% ethanol (OM19 pg 546). Top Tier gas complies with higher standards of detergent additives that provide cleansing benefits preventing fuel system and engine deposits. Costco carries Top Tier fuel, and by refueling there, I know I'm already getting the 'extra' additives and don't bother adding any others.
5250

Honda doesn't recommend engine oil additives (OM19 pg 564), though I've considered adding in future (Liquid Moly) to counteract high pressure/friction and corrosion.
5251
 

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I'm filling up with top tier gas stations for the extra detergent. Not going to dump aftermarket fuel or oil additives in my Insight.
 

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If you use Chevron gas regularly, and nothing else. Then you dont need to use fuel additives. It already has Techron fuel additive in their gas. If you check their website it even says to not use Techron additive that you would buy from a store on top of their gas. I've filled nothing but Chevron 87 octane in my Insight since the day I baught it. Runs great and gets higher MPG than Honda claims.
 

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If you use Chevron gas regularly, and nothing else. Then you dont need to use fuel additives. It already has Techron fuel additive in their gas. If you check their website it even says to not use Techron additive that you would buy from a store on top of their gas. I've filled nothing but Chevron 87 octane in my Insight since the day I baught it. Runs great and gets higher MPG than Honda claims.

Hmmmmmm. Interesting. Is there a website where Chevron gas stations are near me? (via typing in a zip code)
 

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If you use Chevron gas regularly, and nothing else. Then you dont need to use fuel additives. It already has Techron fuel additive in their gas. If you check their website it even says to not use Techron additive that you would buy from a store on top of their gas. I've filled nothing but Chevron 87 octane in my Insight since the day I baught it. Runs great and gets higher MPG than Honda claims.
I’ve also had good experiences with Techron additives. Not with my insight, but in a Camaro I used to own. Whenever the engine would get sluggish, I dumped a container of Techron in a full tank of gas. It took care of the problem pretty quick. Think it was my fuel injectors getting clogged.
 

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Hmmmmmm. Interesting. Is there a website where Chevron gas stations are near me? (via typing in a zip code)
Sure, you can download the GasBuddy app on your phone. Type in your zip code and it will show all nearby gas stations. Theres even a tab that allows you to only find specific gas stations companies. You can select Chevron and it will show all nearby locations.
 

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Hmmmmmm. Interesting. Is there a website where Chevron gas stations are near me? (via typing in a zip code)
Here's a link to Chevron's "find a station" web page / search. You can specify radius, city, or zip - Chevron With Techron - Station Finder

But honestly, Google (or Safari) search of "Chevron near me" on my iPhone works just fine for this purpose, and I don't have to bookmark or re-find a specific page.
 

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I'm a new Insight owner so I am curious as well. I previously owned a Ford Explorer (3.5L N/A V6) and would use Techron (I'm in Canada so no Chevron Stations) or Seafoam once a month.
 

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I’ve been happy with Lucas Oil Deep Clean fuel system cleaner and their standard injector cleaner.. I’ll also use Seafoam here and there ..

I’m lucky as I got a bunch of big Lucas fuel treatment bottles free a few years back and still have a good amount..

Not sure if there is a shelf life on these but I’m assuming if there is , it’s probably a very long time ..
 

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After doing some research on various octane boosters, I purchased 2 32oz bottles of Torco accelerator. About $23 for each. Probably not worth to buy just to improve mpg, unless it bumped your mpg to something crazy like 90mpg..

But I’m going to use both bottles on back to back fill-ups with 91 at Costco, which according to their chart will give me a little over 101 octane. I’m really curious to see if there will be a significant mpg boost.

 

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After doing some research on various octane boosters, I purchased 2 32oz bottles of Torco accelerator. About $23 for each. Probably not worth to buy just to improve mpg, unless it bumped your mpg to something crazy like 90mpg..

But I’m going to use both bottles on back to back fill-ups with 91 at Costco, which according to their chart will give me a little over 101 octane. I’m really curious to see if there will be a significant mpg boost.

I got five bucks that says the difference will be negligible. Premium fuel (or better), in a car that does not require it, adds little/no benefit. That, and $23 for a half-gallon of fuel additive seems excessive. With all that said, please report back with your observations! You never know!
 

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I got five bucks that says the difference will be negligible. Premium fuel (or better), in a car that does not require it, adds little/no benefit. That, and $23 for a half-gallon of fuel additive seems excessive. With all that said, please report back with your observations! You never know!
The only reason I bought it is because when I had a 2010 Prius, I experimented with 91 gas at different stations and I swear Costco 91 gave me the best improved mpg, even better than Chevron and Shell 91, which also gave me improved mpg.
 

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The Insight has an Atkinson-cycle engine (lower compression). Higher octane is mainly used in performance engines with higher compression to reduce knocking along with providing extra power. Since we are mainly driving a generator, there would be no difference in power during acceleration, passing, etc. I'm not 100% on how higher octane would manifest into MPGs. If it did we'd be running it in lawnmowers, mopeds - anything with a gas engine. Ergo, the money spend is probably not worth it.

However, I'm still interested in your next few tanks to see what happens!
 

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The only reason I bought it is because when I had a 2010 Prius, I experimented with 91 gas at different stations and I swear Costco 91 gave me the best improved mpg, even better than Chevron and Shell 91, which also gave me improved mpg.
Using premium gas in a clean, mechanically sound engine not designed to use it, though, provides no benefit.

In engines with carbon buildup on pistons or in the combustion chamber, however, premium gas can provide some benefit. Deposits can reduce cylinder volume at top dead center, effectively increasing the compression ratio. This alone can lead to engine knock. The deposits can also become hot spots that preignite the mixture, leading to engine knock.

In these cases, a higher octane fuel helps resist engine knock and allows the engine to operate closer to its normal conditions rather than detuning to prevent engine knock.


I think your Prius had carbon buildup and using higher octane fuel brought it to normal operating condition. Higher octane fuel have less energy content so it wouldn't make sense that it would give you better fuel economy.
 
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