Coy Posted October 26, 2022 Share Posted October 26, 2022 Hello fellow Yota, I want to change my 88’s Dolphin motor oil with this Castrol 20w-50 motor oil. I am trying to stay away from synthetic motor oil. They are not good for these old RV. The Castrol Classic 20w-50 have a lot of zinc. Is this oil a little thick(20w-50) ?Thank for letting me join this group. ✌️ Quote Link to comment Share on other sites More sharing options...
extech Posted October 26, 2022 Share Posted October 26, 2022 it will be fine. when it's cold its 20w. when its hot its 50w Quote Link to comment Share on other sites More sharing options...
fred heath Posted October 26, 2022 Share Posted October 26, 2022 1 hour ago, Coy said: Hello fellow Yota, I want to change my 88’s Dolphin motor oil with this Castrol 20w-50 motor oil. I am trying to stay away from synthetic motor oil. They are not good for these old RV. The Castrol Classic 20w-50 have a lot of zinc. Is this oil a little thick(20w-50) ?Thank for letting me join this group. ✌️ I run Mobil 1 20/50 weight in my 1979 20R. Have used it for the past 11 years and love it. I usually do an 1800 mile trip each year. 900 miles each way stopping only for fuel and power naps. Engine doesn’t miss a beat or overheat. I have nothing against Dino oil but found my rig runs much better with synthetic oil. I also run Mobil 1 in my transmission and rear axle. FWIW Fred. Quote Link to comment Share on other sites More sharing options...
Coy Posted October 27, 2022 Author Share Posted October 27, 2022 Thank you for you input. Quote Link to comment Share on other sites More sharing options...
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