Fr.Leonard Feeney said ALL non Catholics are going to Hell unles they convert-Vatican Council II has the same messsage.So also the Catechism

For the Society of St.Pius X (SSPX) the priest from Boston supported by the Letter of the Holy Office 1949 presents a model of Vatican Council II.

Can the SSPX accept Vatican Council II in accord with Fr.Leonard Feeney and the dogma extra ecclesiam nulla salus in its literal interpretation?

They could but first they would have to wade clear of so much minsinformation in the secular media.

Here is Wikipedia for example:

It is traditionally believed that sacramental baptism ("baptism of water") is the only way to be properly baptized. In addition, "the Church has always held the firm conviction that those who suffer death for the sake of the faith without having received Baptism are baptized by their death for and with Christ. This Baptism of blood, like the desire for Baptism, brings about the fruits of Baptism without being a sacrament- Wikipedia,Feeneyism

Wikipedia implies that the baptism of blood and desire are  known to us and so are explicit exceptions to the interpretation of Fr.Leonard Feeney. This is not true. The baptism of desire etc are possibilities and do not contradict the 'strict interpretation' of the dogma. Wikipedia assumes that it does and so supposes there are two interpretations of the dogma, the strict and non-strict version. In the non strict version of Vatican Council II, the liberal version,  Lumen Gentium 16 ('invincible ignorance and a good conscience) and Lumen Gentium 8 ('elements of sanctification')  would be exceptions; exceptions  to the strict interpretation of the dogma.

If the SSPX can see through this error they would realize that there is only one interpretation of Vatican Council II and it is not the liberal, non traditional one.

Wikipedia again:

Feeneyism is a term for the Roman Catholic heresy associated with Leonard Feeney (1897–1978), a Jesuit priest and founder of the Slaves of the Immaculate Heart of Mary. Fr. Feeney favoured a strict interpretation of the doctrine extra Ecclesiam nulla salus ("outside the Church there is no salvation").- Wikipedia, Feeneyism

It is a heresy for Wikipedia since they assume that the baptism of desire is a defacto, explicit exception to the dogmatic teaching on exclusive salvation being there in only the Catholic Church.They do not realize that to imply that the dogma has defacto exceptions is the real heresy.

Wikipedia:

Father Leonard Feeney (Lynn, Massachusetts February 18, 1897 – Ayer, Massachusetts January 30, 1978 ) was a U.S. Jesuit priest who defended the strict interpretation of the Roman Catholic doctrine, extra Ecclesiam nulla salus ("outside the Church there is no salvation"), arguing that baptism of blood and baptism of desire are unavailing and that therefore no non-Catholics will be saved. –Wikipedia, Fr.Leonard Feeney.- Wikipedia, Fr.Leonard Feeney

The Church has always taught that no non-Catholic will be saved unless he or she converts into the Catholic Church. Wikipedia calls this the 'strict interpretation' and assumes that it is the personal opinion of Fr.Leonard Feeney.

The Letter of the Holy Office 1949 supported Fr.Leonard Feeney in its initial paragraphs. If the Letter assumed that the baptism of desire etc were known to us (in the latter paragraphs) and so exceptions to the dogma then it made a mistake. It is an objective, factual mistake since we do not know anyone personally saved with the baptism of desire, we cannot see any such case in real life. It is a fact that we do not know those who are in Heaven.
So if we are not careful we can also have a strict and non strict interpretation of the Catechism of the Catholic Church. The Catechism like Vatican Council II supports Fr. Leonard Feeney.

So without this error, Vatican Council II is a traditional document in agreement with Fr.Leonard Feeney and in accord with the centuries old interpretation of the salvation dogma.

-Lionel Andrades