I changed to sythetic oil in my: 1993 F150 at 182K (now at 255K), 1997 B2500 Van at 160K (now at 175K) and 2000 4Runner at 245K (now at 250K). No leaks. No problems.
Perfect post. Thank you.
My 208,000 mile 17 year old beater didnt leak a drop when I started using synthetic oil when I bought it at 203k.
I can’t believe that so many keep on posting nonsense about synthetic oil causing leaks to appear. Lol. If the seal is about to start ooozing oil, it’s only a matter of time regardless of what oil you use.
using SM or SN rated oil (synthetic or not) = the same specs, cleaning power, durability, etc. there’s technically nothing different between the oils. The synthetic can simply handle more abuse.
What is this, 1990s with old wives tales still going around about “GASP” synthetic oil will cause leaks EVERYWHERE!!!! Ahhhhhhhh!!!!!