1987 Toyota Corona Pricing and Specs

YOU can cause a problem putting too much oil in the sump. The crankshaft hits the oil as it rotates, which can put extra load on the engine, reduce performance and increase fuel consumption. It can also cause the oil to froth and cause problems in the lubrication system. However, adding an extra 200ml probably won't have too much effect.

I haven't heard of any problem in getting LRP in your area, but I will check with the fuel companies. The engine in your Toyota should have valve seat inserts which means you could simply switch to ULP without the need to use an additive. PULP would be a waste of money in your car when it will run happily on regular unleaded.

There were reports from Western Australia of a build-up of deposits on the spark plugs of engines running on LRP and which were driven only short distances. The deposit was blamed for poor starting and running, so it's worth checking your plugs for abnormal build-up of deposits. Clean the plugs before reinstalling them in the engine. If there is an unusual build-up that could be causing the problem, consider changing to a higher heat range spark plug that would help burn off the deposits. While there is a chance the problem is caused by the LRP you use, it's more likely to be a problem with the engine itself, so check the carburettor to ensure the automatic choke is operating correctly, and check the ignition timing, points and set them to specification. Also check for signs of intake manifold leakage.