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20

Adding something to fuel tank: Not necessarily, just purchase good quality gasoline. It already has all the additives needed to protect the engine. However, I understand that in Brazil, fuel may contain quite a lot of ethanol. Do make sure your car can handle it. However, if you drive so little the gasoline becomes stale, you might want to consider some sort ...


7

If you are filled with the "urge to do something", I could give you some placebo task that does nothing but makes you feel like you're being diligent. But that's silly. This service is not that big a deal. While it's true that 1.5km (1 mile) twice a day is the worst service a car could be in (much worse than taxicab or police-car service, because it ...


4

Fundamentally the engine is a pretty robust unit - but something to check thoroughly is whether it as affected by the "Dieselgate" scandal, cars that have had the recall "fix" done have significantly poorer driveability and the change to the injection cycle means they chew through EGR valves like there's no tomorrow! And replacing the EGR is not exactly ...


3

Probably not, but you've confused the poor computer, because the fuel doesn't have nearly the energy content it is expecting. Your best bet is probably to get some proper gasoline cans, siphon off most of the fuel in the tank into the cans, fill it up with E0 gas (no ethanol) immediately, then add some of the jerry-can gas every fillup, aiming for a final ...


2

So change from D to 3 or 2 and use brakes as necessary. It’s engine braking similar to a manual plus brakes. Note this is about driving technique and will likely be closed.


1

To keep this related to mechanics rather than technique, here's what I'll say. Your vehicle is attempting to displace some of the energy off of your brakes by putting extra force against the motor. This utilizes engine braking. Strictly, this does put additional stress on the transmission and motor that would not be there when in neutral. However, many ...


1

If your neighbor were to build a 1/4 scale steam locomotive from scratch, he would finish before you, based on the scope of the project as you are defining it. You are far better off streamlining as much work as possible. For instance, if you are building an engine old-school with quad Holleys, it is very difficult to reach 450hp, and it happens at ...


1

The manufacturer's put their engines on dynamometers during the design and build phases. In fact, there are test engines designed to be varied in many ways to test different parameters, one manufacturer is, or was, Ricardo. One engine they produced, that I spent many hours running, had variable compression ratio, which gives a huge amount of combinations ...


1

At low RPM with an open throttle ( lugging) , there is nearly atmospheric pressure in the manifold . Then you get maximum compression in the cylinders so if the fuel octane is not high enough for that compression , you get preignition. Of course if the timing is too advanced you can also get preignition even with good octane.


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