2022 Mitsubishi Triton Pricing and Specs

Broadly speaking, the law in WA states that you can’t increase the width of a car’s tyre more than 30 per cent over the standard fitment tyre. But since you’re only going 20mm wider, that’s not an issue and shouldn’t present any legal problems. However, it would still be wise to let your insurance company know about the increase as insurers often have different standards to the actual law-makers.

The only other hitch might be that the new tyre is physically too wide for the rim it’s being fitted to. Again, though, this is not a huge increase and should be viable. A good tyre shop will be able to check your rim size and let you know one way or the other.

Sludge build-up in oil is definitely an engine killer. But with a full and correct service history, this really shouldn’t happen. That it does, is possibly down to long service intervals (driven by consumer demand for less maintenance and down time) and possibly even the way the vehicle is used. If it’s worked hard (towing, for instance) in high ambient or dusty temperatures, then sludge can build up as a natural result. The way a modern turbo-diesel recirculates some of its exhaust gasses also mean soot can combine with oil vapours from the crankcase to cause a build-up of black gunge, and that’s not good either.

I’d be keen to see what the oil analysis shows. If the oil was lacking some of the additives it needs to keep a diesel engine clean, then that may show up.

If you can prove the service history to Mitsubishi’s satisfaction, I’d be asking for some kind of help in the cost of repairs. Whether or not the company plays ball is debatable, but it would definitely be worth a try with low mileage like this and documentation of correct servicing for all of its (short) life. If the vehicle is still under the factory warranty and you have a full service record for it, then it’s pretty clear you have a valid warranty claim, barring any negligence or mis-use on your part.