They're no teetotalers.

Despite previous claims of almost Lenten temperance, Schuler family members are now admitting that they're not shy about knocking back a couple of piña coladas or keeping a big bottle of vodka close at hand.

In fact, Daniel Schuler — the tragic Long Island dad whose wife, Diane, killed herself, their daughter, their three nieces and three adults in a horrific wrong-way collision on the Taconic State Parkway near New York City — says the 1.75-liter bottle of Absolut found at the crash site may well have been his.

For sipping, of course.

The family continues to decry as impossible this week's toxicology results that indicated that the 36-year-old West Babylon mother had twice the legal limit of alcohol in her system and was high on marijuana.

"They were known — because they were not drinkers — to carry the same bottle of vodka for the whole season back and forth, because Daniel liked to have a drink every once in a while at home," Tom Ruskin, the Schuler family's private investigator, said in an interview on the "Today" show Friday.

"So they would use the same bottle of vodka," Ruskin said. "They did carry it open sometimes in the back of the car in one of their bags.

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"Now, Daniel has said he loaded those bags into the car. ... He's not sure, for our investigation, if he loaded that bottle of vodka. We're determining that now."

In the same interview, Daniel's sister-in-law, Jay Schuler, insisted that this was not a family of guzzlers.

"If we had a family barbecue, we would make one blender of piña coladas," Jay said.

"This is not Diane," the sister-in-law added, referring to the toxicology results.

Suffolk County Child Protective Services is not taking the family's word for it.

As The Post first reported Thursday, the local child-welfare authorities are probing whether Daniel is fit to take care of his hospitalized 5-year-old son, Bryan, the crash's sole survivor.

Among their questions:

• Is Daniel — who has denied his wife even liked the taste of alcohol — covering up for his wife's drug and alcohol problems?

• Did he know she was drunk and high that day without doing something to stop her?

• And would his depression over the loss of his wife, 2-year-old daughter and three young nieces interfere with his ability to raise the boy?

Bryan's physical recovery, meanwhile, continues.

"It will be a long road," Jay Schuler said. "He's speaking, he's talking, he's asking for people, and we have all been there for him to support him, to love him, to comfort him, and to really help him through this.

"We are at his bedside as often as can be."

The family is continuing to conduct its own investigation into medical explanations for the crash — including a stroke, which an autopsy by the Westchester County medical examiner has already ruled out.

One of Diane's drinking buddies has told The Post that her pal felt "trapped" in her marriage and regularly drowned her sorrows with vodka at a Long Island bar.

According to the autopsy report, Diane had downed the equivalent of 10 shots of vodka and had smoked marijuana anywhere from 15 minutes to an hour before steering her minivan full of kids the wrong way down the Taconic in Westchester County, N.Y.

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