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unleaded or premium unleaded?
hello to all...
what do you put in a 72 280SE 4.5 V8??? should I use additives? can I use regular or mid-grade unleaded? HELP!!! |
MB has recommended "90-91 octane fuel for the "pre-catalyst" cars that have Valve adjustment. Your car falls into that catagory. They also recommend valve adjustment (check clearance) every 6,000 miles.
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