1995 Mitsubishi 3000 Pricing and Specs

This is a very common problem for owners of modern turbo-diesel cars who only do short, stop-start runs in city or suburban traffic. When the engine and exhaust can’t get hot enough for a DPF burn-off, the computer dumps extra fuel into the engine to get everything hot. If some of this excess fuel gets into the engine’s sump, it can force the level of the sump to rise, leading to the warning light you’ve just seen.

In the worst-case scenario, this fuel in the sump will dilute the lubricating oil and that can lead to a damaged engine. But as you’ve found, even if that isn’t the case, there’s still a price to pay to manually force the DPF to burn off as well as change the oil for fresh, undiluted stuff.

The solution is to make sure you drive the car for at least half an hour at freeway speeds once or twice a month. That will get things hot enough for a complete DPF burn and will keep you out of the workshop. Mind you, making this sort of effort might cost you more than the fuel savings you gain from owning a diesel car. This is just one reason a modern turbo-diesel is not ideal for every consumer.

Mechanically, there’s virtually nothing to separate these two versions of what is essentially the same car. Both have the same power and torque and the transmission is the same CVT. The only real difference that could make the GSR feel a bit frisker than your Exceed is that the former is about 40kg lighter.

Perhaps it’s your perception that is the difference here. The Exceed is the more expensive variant so perhaps it has a little more sound deadening on board. That would help explain the extra mass but could also be making the vehicle sound a little more muted and, therefore, less perky. Don’t rule out the spectre of manufacturing tolerances, either. It’s far less common (and marked) these days, but it remains that some cars are just a bit more powerful than the car that came down the same production line either side of them.

Ultimately, even higher tyre pressures can have an effect on acceleration, but if you can detect these small differences, you are indeed a very sensitive driver.

This is not necessarily a problem, but rather a characteristic of modern, multi-ratio transmissions. They can give the impression that they’re constantly searching for the right gear for the conditions, and it’s worse in hilly country or if you’re towing something. By constantly trying to be in as high a gear as possible, the engine will theoretically use less fuel.

Probably the real question is why a computer-controlled turbo-diesel engine needs an eight-speed transmission in the first place. The answer is that it’s all to do with recording a better fuel consumption number than your opposition on the official test. Sometimes, the vehicle has more gears than it can actually use in Australia. Our 110km/h freeway speed limit meant that early examples of the Toyota LandCruiser 200 Series (which had `just’ six gears) wouldn’t shift into top gear. That’s because the factory calibration told the transmission it could only use sixth gear at speeds of more than 115km/h. Which, just wasn’t happening for the vast majority of 200 Series owners in this country. A reflash for the computer fixed the problem, allowing the Cruiser to select top gear at closer to 90km/h, but it’s a great example of where transmission tech is heading.