Tried and proven remedy for noisy ticking hydraulic valve lifters.
Drain all the oil out of your engine, pour in this gallon of flush that is also a lubricant. Run the car at idle (no driving under load) for a 5-10 minutes. Most of the time it will free up any sticking gummed up hydraulic lifters that are making the annoying ticking sound often heard in higher milage VG30DE(TT) engines. We've had a very good success rate with this product eliminating the common "lifter tick" problem, better than anything else we've tried. It's a worthwhile alternative to spending an enormous amount of money actually replacing the lifters with new ones.
The one-gallon engine flush that gives consumers a greater oil change. Safely removes old oil and other harmful deposits from throughout the engine. Prepares oil for a Fresh Start™, allowing oil to do its best job increasing performance and engine life. Clean oil works best in a clean engine™.