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Mobil1 0W-20
I mistakenly added 5qts of Mobil1 0W-20 when I changed my oil today. I bought a 5 qt. jug of 15W-50 for my 7.4MPI MerCruiser and the 0W-20 for my GMC truck. I put the lighter stuff in my boat by mistake and then 2 quarts 15W-50 on top of that. Will this harm my engine? It’s a 1998 7.4 MPI with about 300 hrs. I’m in Mississippi-warmer weather if that matters. Thanks in advance.
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Originally Posted by jmadisonbiii
(Post 4731311)
I mistakenly added 5qts of Mobil1 0W-20 when I changed my oil today. I bought a 5 qt. jug of 15W-50 for my 7.4MPI MerCruiser and the 0W-20 for my GMC truck. I put the lighter stuff in my boat by mistake and then 2 quarts 15W-50 on top of that. Will this harm my engine? It’s a 1998 7.4 MPI with about 300 hrs. I’m in Mississippi-warmer weather if that matters. Thanks in advance.
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That oil is way too thin for a marine engine. Suck it out. 5qt Mobil 1 is only $26 at Walmart. Not worth having a failure.
You have essentially turned it into 5w-30 by adding the 2 qts of 15w-50. |
About 10 years ago I did that and one of the guys on OSO said "You can't run zero nothing in a big block" Suck it out, its not worth it.
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I agree with everyone else. I would get it out of there if it was mine.
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I wouldn't run it in my engine.
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Like everyone else is saying. I would get it out and put the right stuff in there. Ya a cheap fix for what could be a costly mistake.
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