[budd1]

Can somebody suggest a safe engine cleaner (internal)

 

[Schuy]

I use a quart of ATF for the last hundred or so miles before I change oil. ATF has a high detergent package in it, but still has some lubricating properties.

 

[TrailDust]

Thread moved to a more appropriate forum, but a redirect has been left in the Highlander forum so the folks there can navigate to the new location.

Also, you may want to search this forum for "seafoam," among other search terms regarding engine cleaners. :thumbsup:

 

[humanoid]

Auto-Rx

http://www.auto-rx.com/

 

[messerchmidt]

AC DELCO/ GM engine flush/cleaner, amsoil engine flush, chemtool b12, even seafoam

your engine is not made of paper. follow the instruction and you will not have a problem with any of the above