This topic has been beat to death but I'm throwing my in my 2 cents worth. Mobile 3309 is getting hard to find especially in Canada. I wasted many hours trying to find a replacement , most are synthetic and 3309 and ARSC fluid are not. I rooted around and found Aisin makes or has it made for them. Go to aisinaftemarket.com and in their catalog you can find it and it's good for the Rams. The point of all this is that you can get it at Rock Auto for $6.00 a quart , its $17.00 a quart at the dealer. Had the service done at dealer once $500 later I said never again. Will get a filter at Geno's in the fall and order a case from Rock Auto. Hope this helps cut down on costs.