Magnetic Plug 25 vs 100 hr

Rotax-Owner wrote:

Lockwood has done extensive testing regarding oil change procedures with the use of +30% 100LL AV-gas. Even though it no longer states you need to do 25hr oil changes in the line maintenance manual (now it's 50hrs), it's still very good practice and we also recommend the 25 hr oil change and magnetic plug inspection when operating more than 30% `100LL Av-Gas.

I would think Rotax has done extensive testing as well, no? If the manufacturer is recommending oil change every 50 hours when using +30% leaded gas, they must have a reason, right? That, plus use of Decalin should be sufficient, no?

Rotax has not provided testing data regarding the use of Decalin, however, we have seen VERY good results!. Based on our experience and what we have seen out in the field and at overhaul facilities, we stand by the below statement. 

"it's still very good practice and we also recommend the 25 hr oil change and magnetic plug inspection when operating more than 30% `100LL Av-Gas"

Regarding the use of Decalin, am I correct in assuming that if I mix 50/50 auto/100LL that the amount of Decalin that I use is based upon the quantity of 100LL, not the larger quantity of auto + 100LL ?

This is something you will need to discuss with Decalin Chemincals 

https://decalinchemicals.com/products/decalin-runup-fuel-additive/

Rotax-Owner wrote:

This is something you will need to discuss with Decalin Chemincals 

https://decalinchemicals.com/products/decalin-runup-fuel-additive/

Thanks. I have sent them a message. If they respond I will report back here.