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Thank you!

I have a couple of bottles of original Nissan CVT NS3 fluid that were stored in my garage in North Carolina for the last three years. Would it be safe to use them, considering they were stored in hot summer temperatures? Also, I recently purchased some Idemitsu SVTF Type N3 fluid; can I mix this...

Thanks 69Torino, will a catch can void a warranty in case of engine failures? I recently read a thread here on BITOG about Premium fuel reducing oil fuel dilution effect https://bobistheoilguy.com/forums/ubbthreads.php/topics/4577441/Premium_fuel_reducing_oil_fuel . What do you think about it...

Thanks 69Torino, does it mean 5w-40 would be fine in 2018 optima turbo engine?

69Torino, is the new type of oil control valve implemented in 2018 optima 2.0 engines? Somewhere on the BITOG I read that premium fuel helps reduce fuel dilution. Do you know is this true? Thanks!

Thanks 69Torino for the useful information. By the way what do you think about fuel dilution in the turbo engine? I read about it on kia optima forum where the members highly recommend 5w-40 mostly because it's believed 5w-30 oil becomes too thin from excessive heat and fuel dilution in GDI...

Thanks 69Torino, so there are no advantages of using 5w-40 in 2.0 turbo engine?

I changed oil to PP 5w-40 few days ago and immediately noticed engine rattling at cord start. I also read that PP is not the best oil for the money. I plan to change it to motul 8100 X-cess 5W-40 and send it to the lab next time. If the results are good I will stick with that oil. Otherwise, I...

I can't use 0w-40 because it's not approved for my engine and I'd like to maintain 10 years warranty. What is the best oil out of 5w-40? Thanks

Hi everyone, I recently picked up a new car and plan to start using 5w-40 with OCI up to 5k miles. Kia dealer will do all the oil changes I will bring my oil. Can you please advise me what approved oils can I use that meet at least the following specs ACEA A5, ACEA A3, API SM, ILSAC GF-4. After...