E46Fanatics - View Single Post - e 46 engine knock (after oil change to non-synthetic oil) -attached video as well
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Old 12-04-2012, 05:19 PM   #45
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Join Date: May 2007
Location: TX
Posts: 4,123
My Ride: 330i
Can't believe most people on here never heard of lifter ticks before.

Car is at 180+ thousand miles, and the noise started happening after an oil change with some dyno noise. This is what happens if you don't use correct viscosity oil in high-mileage engines.

Just change the oil with the most viscous LL-01 synthetic to help with the noise next time around. It may still be there, but I wouldn't try and open up the engine just because of this.

Edit: Lifter noise is very common in e36 and e34 circles. The cure is what I said above.
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Last edited by SeanC; 12-04-2012 at 05:20 PM.
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