No, you shouldn't have any problems as long as you use the same viscosity oil. Keep in mind that the semi-synthetic is mostly mineral oil...let me rephrase that...conventional oil anyway.
There aren't any issues with mixing the oils unless you are using an extended drain program or your engine specifically calls for a full synthetic. Your engine doesn't care and neither does the oil. As a matter of fact, visit amsoil.com and check out their FAQ section. They will tell you the same thing in not so many words.
2006-12-10 10:15:05
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answer #1
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answered by Lemar J 6
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It wont be a problem running the engine on mineral/semi or fully synth oil.....but its not wise to mix two different types together.
Rather just drain the oil and fit a new oil filter, then top up with new oil.
Make sure you use the correct grade & viscosity as is recommended by your cars manufacturer.
2006-12-10 10:15:47
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answer #2
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answered by godlykepower 4
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Yes you can, no problem. Oils are made to be compatible, you can't really get out all the oil in an oil change. There is always some residual oil left. Think about it, conventional oil and synthetics are mixed at the refinery to make the blended oil.
2016-05-23 03:07:20
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answer #3
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answered by Anonymous
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Why should you. The semi synthetic is mixture of both
2006-12-10 11:10:30
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answer #4
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answered by Anonymous
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No, as long it follows the requirements for your engine's safety and regulations... and you can find them from it's owners manual.
2006-12-10 10:20:41
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answer #5
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answered by wacky_racer 5
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No problem they will mix quite happily
2006-12-10 23:19:29
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answer #6
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answered by ? 7
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no problems but really must try to avoid
2006-12-10 10:14:16
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answer #7
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answered by benji 3
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No. I asked that once in Halfords and was told that it would be okay.
2006-12-10 10:13:29
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answer #8
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answered by Anonymous
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Nope, no problem at all
2006-12-10 10:17:03
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answer #9
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answered by Lewisthelab 4
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