Steven Taylor has warned Newcastle's Championship rivals that they are yet to hit top gear this season.
The Magpies have opened up a 10-point lead at the summit of the second tier table and look set to make an immediate return to the Premier League.
They have taken 25 points from their last nine games and have tasted success in 15 of their 22 fixtures in the league.
No-one at St James' Park is taking promotion for granted, though, with Taylor urging his team-mates to up their game even further over the coming months.
"We are getting there but I don't think we have hit our best form yet,'' said the centre-half, part of a defence that has kept 13 clean sheets.
"I really think there is more to come from this side and I hope the results in the second half of the season will show that.
"We have a lot going for us right now but there is extra in the tank.''
Newcastle are on course to smash through the 100-point barrier this season, following in the footsteps of Reading and Sunderland, but Taylor insists the club's only target is to secure a safe passage back into the big time.
"I don't really care how many points we get as long as we win this league,'' he said.
"We are just interested in getting wins and it doesn't really matter how we get them."