What I mean by track time is people that use their Z's mostly for racing. I have a 2010 model with only 7K miles. I do not drive my car often but when I do I usually drive it very hard. After the break in period I added an oil cooler and went with redline oil and a bosch filter. Since then when I check my oil I have noticed some metal deposits on the rag when I check my oil. After doing some research I thought that an oil filter magnet might help out.
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