Question about 2004 Nissan 350Z

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I have engine gunk build up after 45,000 miles what should i do

Don't want to flush it ...afraid to plug the oil screen...what should i do ....it does not look like ther old owner changed the oil often enough....what should i do ..change the oil every couple of weeks and run the **** out of it...thats what someone told me ..he said the gunk should slowly work its way to the oil filter...

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Use an engine flush and follow the instructions carefully.  Also the oil pan is easy to remove and replace on the car.  I've done it.

Posted on Mar 13, 2009

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Don't flush it...stuff will jam up the screen. I'd shorten oil change intervals to 2000miles and use a pint of marvel oil in each change. It will help dissolve junk without taking out so much at one time that screen becomes plugged. Resume regular intervals after about four changes and change filter only at half way point for the next two change intervals. Use a good quality oil that has a very low parafin base, during first part, then change to a semi-synthetic. It will take some time to clean it up but it took some time to build up as well! The gummy stuff is not the primary problem. It's the hard carbon residue that forms under intake etc that you need to worry about.

Posted on Mar 13, 2009

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It's listed in your owner's manual. Schedule A is normal driving conditions.
SCHEDULE "A"
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15,000 miles (24 000km) or at 12 months
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