Gumout Regane for GDI engines

[jarred52]

I see that Gumout has a new (at least new to my knowledge) "Regane" product to clean the valves and ports of direct injection equipped engines. According to the Gumout website, it contains the chemical P.E.A. The air intake house is disconnected then the product is sprayed directly into the throttle body with the engine running. The cost of a can for a d.i.y. application at Walmart is about $10.

My Hyundai service department has a similar procedure. I do not know what chemical they use but the treatment costs about $100.

If anyone has tried the Gumout, I would really like to hear your opinion. If it works without any collateral damage, it should be a great product for our cars.

 

[xsolara]

as far as I'm concerned TOP TIER GAS is all you should need......from past experience most of these cleaner products are snake oil.
I'm not aware of any problems with Hyundai's GID engines following their guidlines of TOP TIER GAS

 

[glennk]

Along with Top Tier gas, make sure to get fuel from a reliable station.

 

[jarred52]

as far as I'm concerned TOP TIER GAS is all you should need......from past experience most of these cleaner products are snake oil.
I'm not aware of any problems with Hyundai's GID engines following their guidlines of TOP TIER GAS

In a direct injected engine, the Top Tier gasoline can only clean the fuel injectors. The gasoline/air mixture is sprayed directly into the combustion chamber and does not come in contact with the valves as in a car with regular injection. (Toyota has a hybrid system with dual injectors on some cars that spay the fuel in both).

 

[TroyK]

top tier gas won't save the intake valves from carbon buildup because the gas doesn't wash over the valves in a direct injected motor. all engine makers that have installed direct injection are experiencing issues with carbon buildup. it's the reason toyota has gone to dual (port and direct) injection on some of its motors. ford is now doing the same with the 3.5l ecoboost engine. not sure how soon carbon buildup is occurring on the hyundai engines, but it will happen quicker than if the engines had port injection.

 

[lobsenza]

The mechanic that I have used since 1995 and trust completely (he tells me things are not needed as often as he recommends doing something) says that cleaning the carbon buildup on direct injection motors is very important. He recommends every 12,000 miles.

He did a top engine clean (change computer settings, rev engine to 4000-5000 RPM for 6-7 minutes, let idle for 30 minutes while putting a can of fluid into the system. He charged $80. he also cleaned the fuel injectors and air intake for an additional $80. This includes a can of fuel injector cleaner in the gas.

I use Top Tier gas about 75% of the time. I put a can of fuel injector cleaner in the gas every 5,000 miles. I have found that the fuel injector service does make a difference on my vehicles. I usually do this service every 15k-20k. It made such a difference in my Lincoln LS that I did it every 10k.

Yes, I over maintain my vehicles. However, I do not overpay. The cost of maintenance on my Genesis is $0.037/mile. The cost of maintenance on my Toyota Sequoia with 70,000 miles is $0.071/mile. This includes everything (tires, rotation, alignment every 5,000 miles, oil changes, new tires, brakes, filters, cooling system flush, etc). I use a spreadsheet to track each vehicle and a master spreadsheet that compiles the data so I can see when maintenance is due (I have 4 vehicles, so I prefer this to tracking by memory). I use the maintenance reminder for oil changes. I do basic stuff myself and use this mechanic for any non-warranty things.

 

[celltech]

Looks like PEA is just Techron, and I have not heard of any problems with that. But I wonder if you can get the same results by spraying it in the intake vs having port injection that does it for several hundred miles until your tank is empty. I don't think it will hurt, but who knows if it really works either. I should see if I can get my borescope camera into a valve and take a look

 

[TroyK]

here is a fairly short read on direct injection and carbon buildup on valves.

http://www.aa1car.com/library/intake_valve_deposits_gdi_engines.htm