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If all goes well, soon I'll be the proud owner of a 142 with the B20B engine. I assume that I should only use premium unleaded fuel, but what about the oil? I've heard that 15-40 diesel oil should be used, but I've also heard that certain additives the older B20 engines need aren't in it. What about adding a zinc additive at each oil change - useful or snake-oil?
Any other bits of advice?
Thanks!
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Mike F - 1984 244 DL - 315,000 miles Original engine, transmission, drive train, starter Undergoing reconstructive surgery with POR-15
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