Traditionalists and sedevacantists are also denying the Deposit of Faith when they deny extra ecclesiam nulla salus(Feeneyite)

Comments on the blog The  Eponymous Flower

Clearly a pope, who denies The Deposit of Faith, would expose himself to be anti Pope, and thus could not possibly be infallible in regards to Faith and morals. 

http://www.catholicapologetics.info/modernproblems/currenterrors/bapdesire.htm

Lionel:

N.D,
Even traditionalists and sedevantists are denying the Deposit of Faith when they deny the dogma extra ecclesiam nulla salus by assuming there are known exceptions. This was the mistake of the Letter of the Holy Office 1949.
They have also changed the Nicene Creed by assuming there are three known baptisms instead of one.
They also wrongly interpret Vatican Council II with an irrational premise to reach a non traditional and heretical conclusion.
I do not interpret Vatican Council II as a break with the Feeneyite interpretation of EENs. So there is no change in the Deposit of the Faith as it is therefor the two popes and also the traditionalists and sedevantists.

-Lionel Andrades

https://eponymousflower.blogspot.it/2016/05/true-or-false-pope-part-i-john-salza.html?showComment=1465050679023#c6344510372151223447

The SSPX is not faithful to the Syllabus of Errors.Theologically, for SSPX bishops and many priests , there are exceptions to the Syllabus teachings on other religions and Christian communities.

http://eucharistandmission.blogspot.it/2016/06/the-sspx-is-not-faithful-to-syllabus-of.html