If your oil doesn't tell you that it is break in oil,it's not break in oil. Break in oil will have high levels of ZDDP and low levels of extreme pressure lubricants. If you had actual break in oil you would need to drive it for at least 500 miles of regular driving or take the car out for a few full throttle runs. After doing either of these two things,you can use any kind of oil you want. I pray that you chose one that has the word racing in the title as they tend to have higher levels of ZDDP.
you can run whatever you want.i run mobil 1 15-50 in my rpe motor with a lot of success.i have used just about everything in these cars and am partial to the full syn 15-50 mobil.my car sees a lot of street duty and a lot of hits.we have a 7 sec car here that uses conventional though
confused yet
So if there's a bucket with a pinhole in it conventional won't leak out but synthetic will? That's basically what this type of theory goes by.
The theories are the why or how; the fact is, it happens. I'm not going by what I read on the interwebs by some faceless know-it-all, or what the friend of a cousin of a brother-in-law once said, I go with what *my* eyes and *my* garage floor tell me. The most common *theory* is that, when using conventional oils, seals "swell" into place and when a change is made to synthetic, they shrink or crack or something, and leaks begin. Sounded kinda hooey to me and that's why I didn't give much thought about using synthetic on my Escape. Well, lesson learned, and, from a sealing point of view, the engine is ruined. No way is it worth rebuilding it to replace various seals and I'm not going further down the rabbit hole hoping some snake oil in a bottle will fix it. Just means checking the oil more frequently, and, afterall, the Buick has guaranteed there's kitty litter handy in the garage already
