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Oil change question.

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Hey guys. I was reading over the oil change diagram that I found on renntech and it says to change oil change at operating temp. Would that be 180? I drove the car for maybe 5mins(I dont think it got up to 180) then had the oil changed. :unsure: Would it make a difference at all? What is the reason for changing at operating temp. Kind of of a dumb question, but just want to be sure.

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There are a couple of reasons for 'operating temp'. One is to try to have as much dirt suspended in the oil as possible, so when you drain, you get as much dirt as possible out. Another good reason, is so the oil flows well, warm oil is thinner than cold oil and it will drain better. The bottom line is, you'll get more dirt and old oil out, if it is warm.

Warm is better than cold, and 5 minutes is better than none.

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One more question. The engine oil level gauge inside the car has minimum and maximum marks. When topping the oil off, should that very last bar at the top of the gauge be filled? My inside gauge usually reads solid to the top of the gauge , but the manual say don't go over that maximum line(leaving that last bar above the maximum level clear)? Hope I expalin this right. Thanks

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Hey guys, I found the answer to the inside engine oil level gauge. In the process of researching I came upon the some info on "oil foaming". I did see a tad bit of foam around the spout where you pour in the oil. I'm kind of nervous now, :unsure: along with driving my car with the gauge above the maximum level. Should I be nervous or concern? The car always drives beautifully, but recently I did hear some screechy sounds on cold start up(whcih I posted a thread on). I know for sure it had something to do with the oil now. Is my engine domed now?? I hope everything is ok, the car still drives great . Any input would be very appreciated. Thanks.

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Your oil level should be within the dipstick range. Middle of the mark is fine. Don't go over the max or else you'll have foaming which doesn't lubricate engine well. If you have too much oil and it's causing foaming, drain all engine oil and refill.

The startup screeching is hard to diagnose without hearing where it's coming from. It could come from loose belt, bad starter, poor engine lubrication etc.

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