What year 911? I'm guessing some air cooled variant since you are concerned about zinc. What oil do you use in it? I have a 1986 911.
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What year 911? I'm guessing some air cooled variant since you are concerned about zinc. What oil do you use in it? I have a 1986 911.First change was at 1200 miles, every 5K since.
The 911 is a totally different story- I'll only go 3K tops, so the zinc doesn't get too depleted.
I've used Brad Penn 20W50. Good stuff. Made from German unicorn's.It's an 85. RoW model imported by a doctor here in AZ and federalized here. My mechanic uses Valvoline VR1, 20W50.