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I have noticed significant grease buildup on the bottom of my Whirlpool dishwasher's door. The dishwasher was purchased brand new in the early 2000s.

I have heard that someone has already tried adding vinegar during a wash cycle to no avail. A quick check of the water temperature with a thermometer reveals a hot water temperature of about 105 degrees Fahrenheit from the nearby kitchen faucet.

Furthermore, the problem happens even after I turn on "HIGH TEMP WASH".

What measures can I take to prevent the problem from recurring after cleaning off the buildup?

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2  
rinse your plates off –  DMoore Jun 27 at 6:03
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If the grease is building up, you might not be using enough soap. And I agreed on pre-rinsing, the more you do in advance, the less strain you put on the dishwasher water filter. –  BMitch Jun 27 at 12:15
    
Some dishwasher require a hot water feed to boost the temps inside the dishwasher. Check your water supply specs. –  Jack Jun 27 at 15:13
    
I'm very reluctant to try pre-rinsing because the purpose of a dishwasher is to wash dishes. I tried having the dishwasher warm up the water to the required temperature to no avail. –  Zian Choy Sep 2 at 5:06
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@ZianChoy all dishwashers have practical limits as to what they can wash. There's a wide range, unfortunately. Some lower end models truly do need you to pre-rinse the plates beforehand. –  DA01 Sep 2 at 5:58

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