Can diesel oil lock a gas engine?

Asked by Aug 14, 2014 at 04:35 PM about the 2003 Toyota Camry LE

Question type: Maintenance & Repair

I went to oil express shop and asked if I needed oil, they checked and told me it was full. they told me pull it around in the bay and we will put something a little thicker to quiet your engine. They put 15-40 Diesel and car engine locked 15 minutes later. 2003 Toyota Camry

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If it was making noise before they put oil in it the damage was already done. Did they drain out some oil before adding? As far as the oil causing a lock up I would have to say no, a loss of oil pressure is the most common in an engine locking up, not the oil itself.

yes, it was already making noise. They emptied 2 quarts from my car and replaced with 2 quarts of diesel 15-40.

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