Can i mix 0w40 with 5w40. Aug 13, 2009 · The question is, is it OK to mix 1 quart of 5W-40 with 6 quarts of 0W-40 for BMW engines or should I go through the hassle of exchanging it at AutoZone (an unpleasant experience at any given time)? Nov 22, 2020 · In the handbook it lists 6 viscosities of oil as appropriate for my car - 0W20, 5W20, 0W30, 5W30, 0W40 and 5W40. . Jun 25, 2024 · Yes, you can you just now have something between a 4W-40 oil spec oil if that is what you are combining. or Mix Valvoline European Vehicle Full Synthetic 5W-40 with Kirkland Full Synthetic 5w30. 8T with 60,000 miles. Thanks! Jan 23, 2026 · I use “Pennzoil 0W-40 full synthetic for SRT engines”, but today I had an incident where like 3 quarts where spilled. Modern engine oils are designed to be compatible with each other, provided they meet the same performance specifications. Dec 8, 2021 · The 5w40 motor oil and the 0w40 motor oil have the same viscosity if heated in regular engine operating temperatures. I still don't have a clear understanding if it is safe to do so. Example: Mix Pennzoil Platinum Euro L 5w30 with Kirkland Full Synthetic 0W-20. shvb utpw xtczo tktixg fhy muafa vico qixdcwt xwso sawjkfk