Lindsay Lohan's Siblings -- Our Dad Is a Liar

Michael Lohan's OTHER children have a clear message for their dad -- he needs to stop spreading lies about Lindsay and their family ... because they want nothing to do with him.

TMZ spoke to Michael Jr., Ali and Cody Lohan about their father's recent antics, specifically his LiLo "intervention" -- and they tell us, it's just a desperate attempt to destroy their family.

Michael Jr. says, "I think it's unfortunate that the public had to be unwittingly invited into the lives of my family members due to my father's lies" -- then adds he and his siblings no longer associate with their dad.

Ali tells us ... Michael's recent attacks against Dina Lohan were the last straw, saying "Please stop waging your own personal war against my family. We don't need you to intervene because we can take care of ourselves without you, as we have been all these years."

Cody added "I have no good memories of my so called father. He has never been part of my life, he needs to leave my family alone."