Sludge buildup on my Toyota Highlander

You may be out of luck. The agreement was reached in 2007. Here are
the terms:


The terms
Under terms of the settlement:
* Owners of damaged vehicles have eight years plus 120 days from the
original purchase date to file a complaint.
* If Toyota denies the claim, owners can appeal to a judge-appointed
third-party administrator: J. Robert Ates, a New Orleans lawyer.
* Customers who have already made repairs may be able to recover the
costs.
* Only those who elect not to participate in the settlement can sue
Toyota
individually. The deadline for that choice was Dec. 31, 2006.
* The settlement is transferable to future vehicle owners.
* The car only needs to show evidence of oil sludge. It is not
necessary for
the owner to have made repairs during the claim period.
* Damages that can be recovered include loss in value of the vehicle
and
incidental costs, such as rental cars. Past lawyers' fees, mental
anguish
and bodily injuries are not covered.
A Toyota spokesman said the agreement is not a defeat for the
automaker.

You are past the 8 years from the original (not the date you purchased
it) purchase date.

Your best bet is to call Toyota or take it to a dealer.