Yes, it is.

His sermons are available on YouTube:  https://www.youtube.com/c/OurLadyofthePillarChapel

Lefebvre: Does that mean that no Protestant, no Muslim, no Buddhist or animist will be saved? No, it would be a second error to think that. Those who cry for intolerance in interpreting St. Cyprian’s formula, “Outside the Church there is no salvation,” also reject the Creed, “I confess one baptism for the remission of sins,” and are insufficiently instructed as to what baptism is. There are three ways of receiving it: the baptism of water; the baptism of blood (that of the martyrs who confessed the faith while still catechumens) and baptism of desire. 

PV:The above +ABL explanation is a contradiction.  As it is written, it’s not catholic. 

Baptism of desire can be explicit. Many times in Africa I heard one of our catechumens say to me, “Father, baptize me straightaway because if I die before you come again, I shall go to hell.” I told him “No, if you have no mortal sin on your conscience and if you desire baptism, then you already have the grace in you.” 
 
 The doctrine of the Church also recognizes implicit baptism of desire.  This consists in doing the will of God. God knows all men and He knows that amongst Protestants, Muslims, Buddhists and in the whole of humanity there are men of good will. They receive the grace of baptism without knowing it, but in an effective way. In this way they become part of the Church. 
 
 The error consists in thinking that they are saved by their religion.  They are saved in their religion but not by it. There is no Buddhist church in heaven, no Protestant church. This is perhaps hard to accept, but it is the truth. I did not found the Church, but rather Our Lord the Son of God.  As priests we must state theTruth. 

So one CI member declares that what ABL has written is "not Catholic."  In fact, says he, it is "a contradiction."  Very well.  Are there others? 

So one CI member declares that what ABL has written is "not Catholic."  In fact, says he, it is "a contradiction."  Very well.  Are there others? Somewhat ironical, I'd say.  CI is a site, many of whose members have a deep respect for ABL, and a devotion to his one time senior bishop, Richard Williamson, whom most of them now recognize as the head of the Resistance.  
Ladislaus and NO probably agree with you, though they withhold comment for the moment.  Let's see if we can lure them into the discussion.  Here is the rest of the quote from A Letter to Confused Christians.  I'd like to think that Abp. Lefebvre, whose name is etched on an interior wall at St. Peter's, might carry a bit more weight in this argument than the posts of anonymous individuals with usernames, who merely post on the internet.

Don't you believe this ^^^^ lying crap poche.

This is the truth:
"The Doctrine of Exclusive Salvation is described as fundamental or "foundational" to Catholic theology. It is called the "Dogma of Faith," because, of a truth, unless a person accepts it in all its momentous absoluteness, he really does not accept the Catholic Faith, howsoever he protests that he does. Conversely, he who dilutes this doctrine to any degree, so radically distorts the Faith that he renders it null and void, and his own faith in the bargain. For he who denies this doctrine makes Catholicity hardly more than a nicety, as if membership in the Church were like the first-class compartment on a commercial airliner, in which the majority of others will arrive at the same destination, really none the worse for their second-class transport." - Fr. Wathen, Who Shall Ascend?