Newby here and 1st post.
I've been using Shell Rotella T 10w30 in my pre 2000 Cadillac Northstar and 2001 Jeep Wrangler based on info from the Jeep and Cadillac forums on it's higher Zinc (ZDDP) content for these flat tappet engines. Now all I'm seeing the new Rotella T4 available but I can't seem to find out if they have reduced the Zinc content or replaced it with some other anti wear/scuffing additive and just continue to use it going forward. I really don't want to get into additives so I was hoping you all could give me some guidance on this.
Thanks in advance for your help.
I've been using Shell Rotella T 10w30 in my pre 2000 Cadillac Northstar and 2001 Jeep Wrangler based on info from the Jeep and Cadillac forums on it's higher Zinc (ZDDP) content for these flat tappet engines. Now all I'm seeing the new Rotella T4 available but I can't seem to find out if they have reduced the Zinc content or replaced it with some other anti wear/scuffing additive and just continue to use it going forward. I really don't want to get into additives so I was hoping you all could give me some guidance on this.
Thanks in advance for your help.