Yes, synthetic oils, any brand, for the formulation is the same, is highly detergent. However, by the description of the mechanic, what you propose to do shall ruin the engine. Why and how? Sure. With the levels of sludge so high the particles that shall come lose in oil shall clog the oil drip ports as the synthetic oil does its job. This clogging shall result in engine failure. THE only way to remedy this is for a trained and certified mechanic to follow very specific steps to take the sludge out. Speak to the mechanic as to this repair. Audi replaced many engines years ago when due to an English grammar deficiency it told owners that a once a year oil change was recommended WITHOUT SPECIFYING synthetic motor oil. The sludge build up caused engine failure in two ways. First, as I mentioned, lack of proper lubrication. The second was that the engines had to work harder and the timing belt would break and that also ruined many an Audi engine. What you propose only works with minor amounts of sludge. I have a 2001 Audi with close o 94,000 miles. I have always used synthetic blend motor oils and service the car every six months/6,000 miles. The engine is as clean as the day it was assembled and has had minimal wear. Oil pressure and compression are 95% of new engine values. You also wrote with very little discipline as to capitalization. This is teen texting slang. You say you like to keep up on things. If this is correct, why the bad grammar? Copying the "wrong ways" of writing of others? This is so common people think it is OK to write badly. Not so. I wrote correctly. It does not hurt, does not take more time and it showcases my education, my discipline and my desire to be the best. I suggest you consider using the SHIFT key to access the larger sized letters.

Penzoil is some of the worst oil you could ever put into a vehicle. I also wouldnt put automatic transmission fluid into the crank case of an engine. Use the same oil (Kendall, Castrol, Valvoline, are some suggestions) for every oil change. Do not mix and match brands as they may have different additives. If the engine is running well, has good oil pressure, and the lifters are not ticking and clacking away... I would leave it alone and drive the vehicle and keep up on scheduled oil changes.

Rest assured there is no such thing as an "oil drip port" in your motor. Mobil1 Extended performance 5W-20 has very high detergent properties. Change the oil every 5,000 miles till the valve train is clean.

truth be told, most engines will have a bit of sludge. it is a part of life. synthetic is a good idea but myself, id actually change the oil with standard, drive it for the life of the oil. 3-5000 miles and then add about 1 qt atf and drive it for one day. the detergents in the fluid can do a bit to get rid of someof but not all of that stuff.

I drive an 04 f150 lariat 5.4 triton and the timing chains are getting replaced this weekend. The owner before supposedly never changed the oil but I'm very good at keeping up on things, so the mechanic said that they're was tons of hard sludge in the motor when he was changing it. I want to start putting pension platinum in it because it cleans out the oil well I heard after like 4 changes or something my engine will be clean inside. Since it's hard sludge that must have been in there for years, will it still clean itself? Or will the oil just clean a little bit of it? Thank you