I now realize that the problems I have encountered are from changing the oil on my car. I used a 10w-40w detergent oil and it has gummed up the hydraulic lifters on my car, bending push rods etc.
After having the heads/valves done the culprit was stuck lifters. In order to not do further damage I will probably use a non-detergent oil which is what was probably there in the first place. My concern is that keeping a detergent oil inside will only continue to put the grime back into it and cause further problems.
What oil grade should I use for summer driving? This is the only time I use this car.
Steve Restelli
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