I've already crossed 7500 miles after last oil change and I do mostly suburban driving. Considering this, I don't want to postpone the oil change much. Does it make sense to do the Techron treatment after the oil change rather than before?
15,000 mile service
- Thread starter arunka007
- Start date
I've already crossed 7500 miles after last oil change and I do mostly suburban driving. Considering this, I don't want to postpone the oil change much. Does it make sense to do the Techron treatment after the oil change rather than before?
A timely oil change takes priority. I'd go for it this time then use the additive first in the future.
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- Plano, Texas, USA
Yeah SkyActiv-G uses direct injection and putting those fuel cleaner in the gas tank has limited effect to clean up the carbon build-up. While I don't mind to have additional fuel cleaner for a tankful of gas once in a while, but I'd rather use newer technology, such as Shell's nitrogen-rich gasoline to "clean up the engine" constantly!
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You a Shell spokesman by any chance? Second time you mentioned this, lol, but you're right. Their 93 octane has the most punch when it comes to cleaning of all their grades. I use Shell all the time and get the best mileage with it. Fuel cleaner has no effect on DI engine intake valves because the fuel never passes over them. I mainly put it in to help keep the injectors clean and maybe might keep carbon off the top of the pistons. https://www.youtube.com/watch?v=fDFgiLrEX1o
Since Techron had limited effect on DI engines do you think it's better to do the fuel system cleaning recommended by the dealer? Do they do it any differently? Is that method better on DI engines than the Techron?
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- Plano, Texas, USA
Like madar said in his post, all fuel system cleaner in the gasoline can only help keeping the injectors and the top of the pistons clean in a direct injection engine. The way dealers cleaning the "fuel system", they'd add some commercial-grade fuel system cleaner additive into the fuel tank, it's not much different than our way pouring a bottle of Techron or RXP into the tank! The only way to clean the carbon build-up effectively on the valves and manifolds is to take them apart on a DI engine. But since the gasoline doesn't touch these two parts initially, chances of getting carbon deposit is minimum. Our almost 180,000-mile Honda CR-V has never gone through any "fuel system cleanup" process by any dealers or shops, and has never replaced the fuel filter. The only things I've been doing are making sure using Top-Tier gas, and pouring a bottle of RXP or Techron into the gas tank from time to time. For our CX-5, I make sure to use Shell gas instead of cheaper Costco gas in our CR-V, and I'd not worry about any carbon build-up at a such low miles like 15,000. Go to Shell website about its nitrogen-rich gasoline cleaning system and I got bought by its cleaning power. Besides I feel better as it's a newer technology than Chevron's 30-year-old Techron.
Strangely I have same experience like madar does: I get significantly better gas mileage by using Shell V-Power 93-octane gasoline in our 2000 BMW 528i on the highway. But I haven't tried any other brand of gasolines in our CX-5.
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- 2014 CX-5 Touring
I'm a bit skeptical of how important Top Tier gas really is. I've used 93 octane from Kroger in my Integra for nearly 15 years, and when I pulled the head off to change the head gasket 3 years ago, carbon buildup was minimal with 330K miles on all original internals.
I'll probably keep using 93 octane from Kroger for the Integra but I might consider going Top Tier 87 octane for our new to us CX5 with 53K miles.
I'll probably keep using 93 octane from Kroger for the Integra but I might consider going Top Tier 87 octane for our new to us CX5 with 53K miles.
buyingconstant7
Member
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- 2014 CX-5 GS AWD
Okay, this has been proven time and time again, do not use fuel cleaner on modern cars! It will clean out your wallet, but not necessarily your engine...especially on direct injection engines. A good "tune up" for the Skyactivs is a long highway drive. Carbon buildup has characteristics of being very pesky and difficult to remove. But lately people have been experimenting and a general consensus for clearing carbon buildup is going for a 30minute highway drive, speeds of at least 60mph, and locking the transmission into a low gear so the engine is turning over around 4,000rpm+, and setting cruise for that time period, and then it will be cleared. I actually tried this yesterday on one of our used cars at BMW. It's a 2012 Tiguan with the 2.0t. It has 20,000 miles and has been nothing but city driven. The 2.0t is very bad for carbon buildup, probably one of the most carbon-prone engines on the north american market right now. Anyways, it was a slow day so I took it at 65mph, at 4,500rpm for 25 minutes. Before my drive, the engine would crank for a bit longer than normal when cold, it's idle was a bit sporadic, and it would miss a little bit when cold as well. I plugged our diagnostic tool into it and monitored misfires and it had about 25 misfires in the span of a minute of idling. After the drive, the engine was much more responsive, especially at low rpm, it now starts up noticeably quicker, and it no longer misfires at all. The monitor logged 0 misfires. So that obviously proves the point of going for a long drive, is a good decarbonizer.
By the way: You would have NO carbon buildup at 15,000miles, if so, very little, not affecting engine performance. It'll crop up around 75,000 miles.
By the way: You would have NO carbon buildup at 15,000miles, if so, very little, not affecting engine performance. It'll crop up around 75,000 miles.
93 octane? Your Krogers in your area just may be sourcing from a top tier suppliers. Other parts of the US get no higher than 91 or 90 octane.
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NelsonLewis
Banned
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- 16.5 CX-5 GT AWD w/Tech BRMica
93 octane at every single gas station here. In fact, it's the 91 and 90 octane that's hard to find as the norm is 93,89, and 87 octane.
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- 2014 CX-5 Touring
93 octane is the normal Premium octane level in the southeastern US, as well as other places. I drove my Integra to Chicago back in 2007 and I'm pretty sure they had 93 octane up there. I think it's mostly out west where 91 is the norm for Premium.
We filled up our 5 again yesterday, and I went ahead and put Top Tier regular 87 from Shell in it.
You guys are lucky. You guys also may not have the extra C.A.R.B. filter in your intakes (I removed mine). Whats the price differential between 93 and 87 over there? 87 here is at $1.85 this morning.
NelsonLewis
Banned
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- 16.5 CX-5 GT AWD w/Tech BRMica
This morning 87 octane is $1.68 and 93 octane is $2.08. Miss the days of $.10 increments where 89 would be $1.78 and 93 would be $1.88. $.40-.50 more now a gallon is a little steep...
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- 2014 CX-5 Touring
Today in north MS (always cheaper than Memphis), 87 is in the $1.70's to $1.80's according to the GasBuddy app. Premium 93 octane is in the $2.20's to $2.30's. Most stations around here have gone to 20 cent increments. A few do 25 cent, and a few do 30 cent increments. I avoid those, usually, for the 93 octane my Integra requires.
It's crazy the technological advances that can allow the Skyactiv's 13:1 compression to run on regular gas, but my Integra's DOHC VTEC engine with 10:1 (which was high 20+ years ago) requires 93 octane. I don't mind it, though.
It's crazy the technological advances that can allow the Skyactiv's 13:1 compression to run on regular gas, but my Integra's DOHC VTEC engine with 10:1 (which was high 20+ years ago) requires 93 octane. I don't mind it, though.
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