Picked up some Penrite HPR30 for the next oil change on Mighty Moke. Bit more expensive than the Valvoline
Seems to tick all the boxes so hopefully will be the new regular replacement.
HPR 30 is a premium high performance Mineral, SAE 20W-60, non-friction modified engine oil. It features a DOUBLE LAYER of engine wear protection with FULL ZINC (approx. 1600 PPM levels) and Penrites advanced EXTRA TEN technology. Protects against corrosion, oil oxidation and sludge under all operating conditions.
HPR 30 is recommended for use in vehicles where SAE 20W-40, SAE 30 or 20W-50 were originally recommended by the manufacturer.