Has anybody had any experience with STIHL HP Ultra oil? It's a synthetic and STIHL's website says to mix it at 50:1, before and after break in. Should I mix this at 50:1 or something lower as I'm still breaking in my GT5 66cc. 
Stihl oil
- Thread starter frozenveinz
- Start date
A couple of my first engines were broken in on 50:1 Stihl. Later ones were broken in using the Opti-2 @100:1. The earlier engines performed about the same on both oils but I have less oil residue with the Opti. Other than that, I'd say they were comparable.
If you spend some time reading about oil choices here, and there's plenty to read, you'll find about as many opinions as to what's best as there are choices of oil. Everyone has had good and bad luck. I prefer the Opti because of the cleanliness and lack of smoke. That said, others will chime in with their stories on many different oils. You'll see everything from the cheapest Wally World stuff to the most expensive and exotic synthetics. Essentially, it's what ever blows your hair back.
Tom
If you spend some time reading about oil choices here, and there's plenty to read, you'll find about as many opinions as to what's best as there are choices of oil. Everyone has had good and bad luck. I prefer the Opti because of the cleanliness and lack of smoke. That said, others will chime in with their stories on many different oils. You'll see everything from the cheapest Wally World stuff to the most expensive and exotic synthetics. Essentially, it's what ever blows your hair back.
Tom
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Well put, 2dr...
I'm one a da chimes... lol
I'd like to give that O2 a try sometime.
I have the greatest respect for Stihl integrity.
Ran em for years. It takes a loong time to wear one out.
rc
I'm one a da chimes... lol
I'd like to give that O2 a try sometime.
I have the greatest respect for Stihl integrity.
Ran em for years. It takes a loong time to wear one out.
rc
Okay then today I drained my gas tank and re mixed from 32:1 to 50:1. It runs a lot cleaner and better now, just was worried I would seize the engine before. This HP Ultra is good stuff.
how do you make the switch to opti 2 smoothly? I am currently running lucas 2 stroke oil, the blue stuff at 32:1.
Simplicity itself 
Drain the old fuel completely frm your tank, mix up a fresh batch, fill 'er up & ride.
Drain the old fuel completely frm your tank, mix up a fresh batch, fill 'er up & ride.