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Just need to do a routine coolant top off in my 2010 RR HSE L322 as light came on today for first time ever. Just wanted to confirm which coolant i should use as I have seen many recommendations for colors. Currently the coolant is orange and the car has been serviced routinely at dealership (I believe OEM is orange dex-cool)

Was planning on buying this ( https://shop.advanceautoparts.com/p/prestone-dex-cool-50-50-prediluted-extended-life-antifreeze-coolant-1-gal-af850/7020008-P?searchTerm=coolant )

to top off... is that ok to mix (same thing as orange already in place)? My understanding is that any orange dexcool 50/50 mix can go with the OEM orange already in place


Thanks
 

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That is the coolant that I used to top off my 2010 RR HSE L322. You might want to check for a leak and the health of your water/coolant pump. Upon inspection, I determined that the bearing on my pump was on the verge of failing and leaking coolant, causing the Add Coolant message. I could both hear a rattle and see the pulley wheel wobbling. Roughly a $600 preventative replacement at an independent shop.
 
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