Mechanic mate fixed the Syncro. He said he replaced the lifters and told me "everything was seized up". Drove it home from Sunshine Coast to Goldy and it ran nice whole way. Problem is my son must have toasted the sender unit when he cooked the beast because it was pretty Psycho during drive home... At first the low fluid light kept flashing despite plenty of water. I stopped at a servo, bled system and topped up the inch or so. It stayed off for about 30 seconds of driving then started its urgent flashing again. Stopped to check but fluid bottle was still full so kept driving. Then the temp stayed so low it was off the dial for the first 1/2 hour of driving. I thought, OK, the temp guage is f-ed so kept driving to next servo (near Mt Tibro). Allowed vehicle to cool after bleeding again, checked fluid... fine, so off we go again. Within a couple of Ks it started flashing again. Still no reaction from temp needle. Then at about Caboolture the needle suddenly came alive in a big way! It shot all the way to the highest point! EEK! I stopped, checked fluid and felt bottle with hand. It was fine so I kept going thinking the guage must just be expressing its newly diagnosed ADHD. The thing couldn't decide if it was hot or cold for the next 1/2 hour... shooting off the range, then dropping back halfway before shooting up again. By the time I was going over the Gateway Bridge it decided it wasn't getting the attention it was seeking so began to behave The low-level light stopped flashing and the needle dropped to where it always used to sit before my son cooked it. From the bridge to home it went mental three times more briefly (flashing light, erratic temp) but I ignored it and it went back to normal again after a few seconds each time. When I got home I told my mate about it's naughty behaviour and he reckoned my fan must be screwy. He told me to replace the thermostat ASAP as he drilled holes in it, and said to get some SealUp right away. I put said SealUp in it and drove it around for an hour or so. Told him I will drain it tomorrow and refill with coolant but he told me to leave it in despite instructions on bottle saying it will react with the coolant if not flushed after use. Next step: get new thermostat and sender unit from JustKampers, and do an oil and filter change. My question to anyone willing to answer... Is the temp sensor the same unit as the level sensor? Both are behaving very badly.