Castrol Syntec Blend question

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So I changed out the oil in my fiance's 06 nissan altima 2.5 with Castrol Syntec Blend and a fram tough guard filter. Is it safe to say that the oil can go 6,000 miles on a OCI? Her commute is 40 miles round trip and its 50/50 highway and city. Thanks!
 
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How long does it take her to get to 6K? I'd say probably if it is within six months since the oil is being heated to operating temp most days...
 
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A_A_G

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 Originally Posted By: Nickdfresh
How long does it take her to get to 6K? I'd say probably if it is within six months since the oil is being heated to operating temp most days...
She gets about 13k miles a year now so a 6 month interval sounds good right?
 
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Don't let it extend that much. I never did believe in extended drains. I am always a 3K OCI guy. Oil is much cheaper than engine.
 Originally Posted By: A_A_G
So I changed out the oil in my fiance's 06 nissan altima 2.5 with Castrol Syntec Blend and a fram tough guard filter. Is it safe to say that the oil can go 6,000 miles on a OCI? Her commute is 40 miles round trip and its 50/50 highway and city. Thanks!
 
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