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DI and premium fuel cleaners? #5350292 02/14/20 08:36 PM
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Jake777 Offline OP
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I have a 2018 Honda Odyssey and I started to get concerned about long term DI carbon build up. I know fuel doesn’t reach the valves but I also know of some new Honda DI motors clogging up injectors under 30,000 miles. My thoughts are wouldn’t the 10x more cleaning power / additives of premium top tier fuels like Shell or Mobil help somewhat? I have a local Shell station that moves allot of gas. They have one tank for regular and one for the V Power premium stuff. When you purchase mid grade they just pull from both tanks something like 38% premium and the rest regular. That would keep me at 89 octane but get a dose of that premium cleaning additive on every fill up. Anyone think there could be some DI engine value by doing that? Again I get that there won’t be any valve cleaning but injectors are still an issue with DI from what I gather.


2018 Honda Odyssey EXL

2015 Honda Accord
Re: DI and premium fuel cleaners? [Re: Jake777] #5350324 02/14/20 09:12 PM
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blufeb95 Offline
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Around these parts it's like 40cents a gallon more to get mid grade, so like an extra $5-8 a tank in most cars. For that price you'd probably be better off adding a few ounces of techron or redline SI1 to every tank if you're concerned about it. Plus Shell doesn't say exactly how much detergent is in any of their gas they just say their premium has like 7x the government mandated minimum, and they say their regular contains at least twice as much, but it could contain the exact same amount it's just down to vague marketing, all grades are top tier. From what I've read using 1oz of Techron concentrate per 10gal of fuel should put as much detergent in the gas as you get at a Chevron station, and Redline has a similar concentration of PEA, so use 2-3oz of techron or Redline to a tank, most cars have what a 15-20gallon tank , and that'll probably give you more detergent than you'd get in a tank of premium at a significantly lower price point

Re: DI and premium fuel cleaners? [Re: Jake777] #5350326 02/14/20 09:15 PM
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parshisa Offline
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Fuel injector issue you’re referring to has nothing to do with DI - it is a well know manufacturing defect with a lot of 3.5L engines in pilot/ridgeline/oddyses for ‘16-18MY. There’s a TSB out there that dealers are aware of. Issue with the injectors is metal shaving clogging them up. Me personally, i run costco 87 all the time


'17 Honda Civic 1.5T/ 6MT
'16 Honda Pilot 3.5NA/6AT
Re: DI and premium fuel cleaners? [Re: blufeb95] #5350342 02/14/20 09:38 PM
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Jake777 Offline OP
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Originally Posted by blufeb95
Around these parts it's like 40cents a gallon more to get mid grade, so like an extra $5-8 a tank in most cars. For that price you'd probably be better off adding a few ounces of techron or redline SI1 to every tank if you're concerned about it. Plus Shell doesn't say exactly how much detergent is in any of their gas they just say their premium has like 7x the government mandated minimum, and they say their regular contains at least twice as much, but it could contain the exact same amount it's just down to vague marketing, all grades are top tier. From what I've read using 1oz of Techron concentrate per 10gal of fuel should put as much detergent in the gas as you get at a Chevron station, and Redline has a similar concentration of PEA, so use 2-3oz of techron or Redline to a tank, most cars have what a 15-20gallon tank , and that'll probably give you more detergent than you'd get in a tank of premium at a significantly lower price point


Thanks good info


2018 Honda Odyssey EXL

2015 Honda Accord
Re: DI and premium fuel cleaners? [Re: parshisa] #5350343 02/14/20 09:38 PM
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Jake777 Offline OP
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Originally Posted by parshisa
Fuel injector issue you’re referring to has nothing to do with DI - it is a well know manufacturing defect with a lot of 3.5L engines in pilot/ridgeline/oddyses for ‘16-18MY. There’s a TSB out there that dealers are aware of. Issue with the injectors is metal shaving clogging them up. Me personally, i run costco 87 all the time


Good to know about the injectors


2018 Honda Odyssey EXL

2015 Honda Accord
Re: DI and premium fuel cleaners? [Re: Jake777] #5350352 02/14/20 09:48 PM
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Railrust Offline
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Try a top tier fuel (some manufacturers require it) and run a bottle of Techron through it every 5,000 miles.


2018 Chevy Silverado 5.3
2007 Lexus LS460 (deceased)
2008 Honda CRV
(Whatever synthetic oil is on sale or rebate)
Re: DI and premium fuel cleaners? [Re: Jake777] #5350428 02/15/20 01:10 AM
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csandste Offline
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Think the main reason for TT and occasional chug of PEA is that injectors in DI engines are more expensive to clean or replace than older injectors. Nothing going to get on the backside of an intake valve on a DI engine unless you do an induction cleaning.


2017 Kia Soul Plus-- Valvoline Daily Protection 5w30+ a bit of Harvest King syn 5w30-- 75,000 miles
Re: DI and premium fuel cleaners? [Re: Jake777] #5350783 02/15/20 12:27 PM
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UG_Passat Offline
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Keep those injectors clean, so that you have proper atomization of the fuel which leads to proper combustion which minimizes deposit formation, which would coat the valves.

You can go with the once every couple thousand mile "shock treatment" or you can do a maintenance dose with every fill up.


2016 VW Tiguan|APR Stage 1|Neuspeed P-Flo|Osram CBI|Redline 5w30
Re: DI and premium fuel cleaners? [Re: UG_Passat] #5351047 02/15/20 06:32 PM
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Jake777 Offline OP
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Originally Posted by UG_Passat
Keep those injectors clean, so that you have proper atomization of the fuel which leads to proper combustion which minimizes deposit formation, which would coat the valves.

You can go with the once every couple thousand mile "shock treatment" or you can do a maintenance dose with every fill up.


That’s what I was thinking. So my logic was by putting in some premium top tier I would get the extra cleaning ability but I might also consider just using a bottle of Techron every oil change like others have recommended


2018 Honda Odyssey EXL

2015 Honda Accord
Re: DI and premium fuel cleaners? [Re: Jake777] #5351081 02/15/20 07:17 PM
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Mad_Hatter Offline
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Originally Posted by Jake777
Originally Posted by UG_Passat
Keep those injectors clean, so that you have proper atomization of the fuel which leads to proper combustion which minimizes deposit formation, which would coat the valves.

You can go with the once every couple thousand mile "shock treatment" or you can do a maintenance dose with every fill up.


That’s what I was thinking. So my logic was by putting in some premium top tier I would get the extra cleaning ability but I might also consider just using a bottle of Techron every oil change like others have recommended

As long as you do as you're suggesting (TT fuel and a techron before oil change), you're doing pretty much everything you can to keep those injectors in top condition. I recently learned the hard way about using unbranded, old fuel. Plus.. I'm not convinced you absolutely must run Shell fuel if you're gonna be doing a Techron system cleaner at oil change time. Don't get me wrong, their premium V power Shell is good stuff right up there with Chevron's, which I personally consider the best. But I think you could get away with using any TT fuel... Costco, 76, ARCO, Valero and many others have TT level detergents. But if you're brand loyal to Shell.. there's absolutely nothing wrong with that/their fuel. I personally run 76 99% of the time as it's the closest to me but from time to time I'll fill up with a tank of premium Shell or Chevron.

Re: DI and premium fuel cleaners? [Re: Jake777] #5354663 02/19/20 03:43 PM
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ChrisD46 Offline
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It's possible Shell and Chevron premium gas nay have more detergents than other TT gas suppliers - I use Quick Trip TT gas and their stations move a lot of gas ! My OCI is 4K miles on a DI engine , so the tank of gas before I change the oil gets a 20 gal. bottle of Techron along with a full tank of Quick Trip premium gas (otherwise I use regular 87 gas) which gets the best gas mileage in my DI engine versus 89 or 91 gas .


'17 Hyundai Sonata 2.4L GDI 5W20 QSUD / Fram Ultra #9688
'10 Hyundai Elantra 2.0L 5W30 (50%) / 5W20 (50%) QSUD / Fram Ultra #9688
'07 Kia Sedona 3.8L 5W30 Castrol EP / Fram Ultra #9999
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