On 2017 Hyundai / Kia 2.4L GDI 6 - speed transmission it is recommended for "severe service" to perform a drain & fill service at 60K miles (I just did two separate drain & fills at 48K miles 2K miles apart with Valvoline Maxlife ATF) and if normal service then 100K miles is the suggested interval . *I did not see where Hyundai / Kia advise a reoccurring schedule for subsequent drain & fill service ? If I had to guess - driving in your typical mixed city / suburban / interstate driving scenario you would want to do the ATF drain and fill service every 30K ~ 40K miles after the first drain & fill service ? Thanks in advance for sharing your experiences / recommendations .
P.S. I believe a "sealed transmission" guaranteed for life (100K miles in the case of Hyundai / Kia) is only a good match / selling point for a buyer who does not intend to keep the vehicle much past the warrantee period . At 48K miles my Hyundai magnetic drain plug had approx. a 1/2" of metallic crude on it (pretty routine I suppose) and the ATF while mostly red in color had some brown color creeping into it and was faintly starting to smell burnt. Again , I'd say not bad and I suppose fairly routine for the mixed driving in Georgia (especially the summers here) . Conversely , the thought of not doing a ATF drain & fill until 100K miles (or even 60K miles) would make me cringe ... I suppose I am in the minority here .
P.S. I believe a "sealed transmission" guaranteed for life (100K miles in the case of Hyundai / Kia) is only a good match / selling point for a buyer who does not intend to keep the vehicle much past the warrantee period . At 48K miles my Hyundai magnetic drain plug had approx. a 1/2" of metallic crude on it (pretty routine I suppose) and the ATF while mostly red in color had some brown color creeping into it and was faintly starting to smell burnt. Again , I'd say not bad and I suppose fairly routine for the mixed driving in Georgia (especially the summers here) . Conversely , the thought of not doing a ATF drain & fill until 100K miles (or even 60K miles) would make me cringe ... I suppose I am in the minority here .