Using flourescent oil dye with synthetic oil

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The Magnificent Seven
Oct 16, 2005
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I've got fresh german castrol in my crankcase and my oil leak has chosen to get a bit faster.

Am I able to put oil dye in my engine and use it to detect my leak, then leave it in for the next 5k-8k miles til the oil change or is this something I should get out immediately after it has served its purpose? should I even be using this (I've tried pressure washing but it hasn't worked out too well)?
 

jdub

Official SM Expert: Motor Oil, Lubricants & Fil
SM Expert
Feb 10, 2006
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Dye is an excellent way to find a leak and will not harm your motor. You can leave it in there till the next change.
 

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The Magnificent Seven
Oct 16, 2005
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they make dye for refrigerant, coolant and oil. i asked at autozone and they didn't have much of anything, but napa had all the dyes readily available.
 

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The Magnificent Seven
Oct 16, 2005
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picked up one of napa's bottles of dye (1 oz). there aren't any instructions on the bottle, so i suppose i should just add the entire thing to my crankcase?
 

jdub

Official SM Expert: Motor Oil, Lubricants & Fil
SM Expert
Feb 10, 2006
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That's the point...1 oz is not a heck of a lot in the big scheme of things. Not going to hurt a thing staying in till the next change.