1.5L Turbo Direct Injection Build Up

[mis3]

I still have a few bottles of Techron Fuel System Cleaner left from my previous car.
Not sure if it is helpful to our DI 1.5L turbo.

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[curt d]

I still have a few bottles of Techron Fuel System Cleaner left from my previous car.
Not sure if it is helpful to our DI 1.5L turbo.

Additional fuel system cleaner is not needed if you run top tier fuels. Chevron and Texaco contain Techron.

 

[mis3]

Additional fuel system cleaner is not needed if you run top tier fuels. Chevron and Texaco contain Techron.

In Canada, there is no Chevron nor Texaco. I use Shell, Esso or Ultramar which properly do not contain Techron.

 

[curt d]

In Canada, there is no Chevron nor Texaco. I use Shell, Esso or Ultramar which properly do not contain Techron.

Here is a read from the resident expert on thenCorvette Forums.

There’s no way to talk die hard additive fans out of using additives, so I won’t attempt to do that. But for anyone who is “on the fence”, actual engine testing data says you don’t need them. Assuming that you use top tier gas regularly, you will be a teeny tiny, little bit WORSE off using extra Techron (or any other additive) than just using the top tier by itself. Our testing over many years (I’m retired from a major oil company) clearly and repeatedly showed that it was entirely possible to use too much detergent. That’s because the detergent itself leaves a tiny bit of residue. So if the engine is clean (which it will be with top tier), then extra detergent won’t make it any cleaner, but it will make it a teeny tiny bit dirtier by the amount of detergent residue left behind. It would be sort of like using an ultra heavy load of detergent in your washing machine. If you did that regularly, it wouldn’t rinse out very well, and eventually, you’d have a collection of soap scum in your clothes. In the case of gas additives, the point of the above message is not to say you will hurt your engine by using them. The teeny bit of residue left by extra additives isn’t enough to hurt anything. The point is, if added on top of gas that already has top tier additives, it isn’t going to help either, so you are wasting money.

There are only two situations where you might gain some benefit from extra additives. One is if you have a seriously dirty engine from tens of thousands of miles on cheapo gas. Even there, the benefit isn’t huge. Just plain old top tier will do as much in a few dozen tankfulls as extra additives would in a tank or two. Neither approach will get the engine back to clean as new, but either approach will get it well over half way back. That one I know from looking at actual test data.

 

[mis3]

Shell, Esso are considered top tier gas in Canada.
I know they do add additives but not sure exactly what.

 

[Design]

The filter has little if anything to do with dilution. It's simply there to trap contaminants and wear particles related to normal operation.

The available oil analysis data suggests the maintenance minder is quite accurate, though slightly on the conservative side. At least when running a typical synthetic blend.

 

[Design]

Run a UOA and find out.

 

[Schmullis]

Just use a brand name fuel, like Shell VPower that has detergent and you should be fine.

 

[Hondaman_MI]

Just use a brand name fuel, like Shell VPower that has detergent and you should be fine.

All Shell fuel has detergent, regardless of octane.

 

[nox]

Has anyone seen intake valves on 1.5 T after 30k or more miles yet?

 

[charleswrivers]

I've never seen a single photo of boroscoped valves on a L15B7. I've seen photos of other cars, especially the N54s BMW had issues with and have over a decade of history of valve deposits.

Nothing on our cars but a lot of assumptions and doom and gloom, especially from our friends that chose a K20C2 to keep port injection.

I'd love it if someone had some photos to share. Good or bad, I'd be nice to know. I bought a cheap ($10) eBay one earlier this past year thinking I might use it for that purpose... but I got what I paid for. It won't take a decent enough picture to see anything unless you're right on something... and even then the quality is pretty poor and the closeness of the light washes out detail. I hadn't thought about it until you bumped the thread.

 

[T_A_H]

I usually get chevron, 76, or Costco.

Do we know if costco uses detergent?

 

[gtman]

I usually get chevron, 76, or Costco.

Do we know if costco uses detergent?

Costco is top tier, so yes.

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