Originally posted by Kremithefrog:
Why are you changing your oil every 1k miles? That's a huge waste of money. And oil treatments are a waste of money as well. Engine cleaners that you run through the engine then immediately change the oil can have good affects though. Running a good true synthetic oil (in the correct weight, 5w-30) is a much better idea, such as mobil1, amsoil, redline,etc. Your mileage problem is not related to the oil. Make sure you have a new pcv valve, new fuel filter, new air filter, clean EGR valve (if you have one), new spark plugs, good wires, and clean the MAF. If you have a CEL make sure to get the code pulled and come back to us. Also make sure you use a good oil filter, motorcraft, pure one, k&n, or mobil1.



Hmm, It was covered after this post that you misread, I do the change every 3k miles, which, for me, works out to be every 3 weeks. I generally use a Purolator filter, and Castrol GTX High Mileage. So, I should spring for a better filter. Gotcha. Thanks ;]

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