2011 LS Auto @ .030 all around, replaced them with Autolite iridium gaped @ .035 noticed better peddle response, RPM use to drop quite a bit before shifting now it shifts smooth without the drop off, I feel much more confident to overtake as there is no more hesitation.
They don't like platinum. The OEM plugs are iridium and once properly gapped work reasonably well. There are better plugs for the car but they don't last as long, which is what eliminated them from consideration for OEM use.
Since it got bumped, I later swapped to the 8EIX with a new coil pack and still happy with the choice and said gap above. Low rpms in 6th gear no tune, handles just fine. Talking a level road cruising state not a low rpm wot state from car in front slowing down to turn. I'd simply go to 5th and be well enough off to speed back up to traffic flow again.
2011 Cruze Eco gaps of .29, .30, and 2 at .31. I am not sure if these are original or not. I bought the car with about 94,000 and it now has 103,000. Hope this helps.
Thanks again for the parts and help with my vacuum/pcv problem.
While doing other engine work I checked the plugs in my 2012 eco.
All gaps were 29, my owners manual specifies 28. I think they are 2012 factory originals as I bought at 30000 miles from dealer. What brand would GM factory have installed? NKG? All in nice condition as were springs etc. Except #2 was not tightly secured and that well had a light tan coating on the well wall. I'll post a photo if color difference is visible.
-BKR8EIX-2668 (iridium plugs), ~$25, expect ~10-15k regaps on these, ~40-50k overall life. -BKR7E-4644 (nickel/copper plugs), ~$8, expect 15-25K out of these plugs, with a regap or two required at 5-8k intervals on stock tune.
Hello everyone. I’m new here but I didn’t see a thread for my specific scenario.
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