Oil suggestions after oil treatment?

I am doing an oil treatment on my oil change soon to get sludge out etc... my truck is an 03 tacoma with 230k miles. Any recommendations on the best oil to use after the treatment?

 

Pennzoil Platinum, cleans, and keeps engines that way. Probably the best oil you can get if you want a nice shiny engine! Give it some time and I think Pennzoil synthetics will top Mobil 1 in sales, they've really stepped up their game on their oils. I used to be an avid Mobil 1 guy, but after trying Platinum, I will never go back. My engine hasn't ran so smoothly or quiet it's whole life.

It could all be in my head, but I doubt it, I'm pretty well aware of the mechanical workings and sounds my engine makes. She definitely likes Pennzoil Platinum better than Mobil 1.

 

I use penzoil and Lucas heavy duty oil stabilizer in every oil change and sometimes sea foam right before I change it. It goes in clean and comes out clean. I had the valve covers off at 260000 to change gaskets and there was no build up. Now at 290000 and everything still looks good

 

I use Pennzoil Platinum in my 3 cars.

 

Like he said my motor is much more sound with penzoil than with other oils ive tried

 

The comments here always amaze me. Lots of witchcraft and superstition about.

Oil is NOT going to change the way your engine sounds unless you change the viscosity. Which is not advised with vvt-i. If you want a quieter engine, go up on the viscosity. but that can cause problems. Otherwise, the "sound changes" are 100% pure imagination. And NOBODY is going to be able, in a blindfold test, to detect any difference between any two oils (of the correct viscosity), based on sound or anything else. Just won't happen.

 

I run 10-40 instead of 5-30 let me say that and it is quieter that way

 

I like Valvoline or Castrol Full Synthetic. My friend has been using Super Tech (walmart) full synthetic for awhile now in his 06 and for the price he said he will never switch to anything else.

 

Oh and STAY AWAY from pennzoil in the yellow bottles, that stuff is sludge in a jug!

 

Please have an oil analysis done from a reputable lab before you make gross assumptions about an oil. Though not all oils are created equal, it's been proven time and again through scientific analysis that just about any name brand oil with an appropriate API rating will perform just fine in any modern car.

 

Well doing an auto shop class for the past two years and having pennzoil yellow bottles as the "free oil" the school gets i have pulled enough engines apart that had nothing but that in it with great amounts of sludge build up inside the blocks, pans, and valve covers. Dont see any reason to have a "oil analysis" that everyone thinks shows everything when ive seen it around 25-30 times over and over

 

And exactly what kind of engines get donated to auto schools? The ones that can't be sold to junk yards and such?

You need a REASONABLE sample. I don't believe for a minute that Penzoil makes a bad oil. I have known way too many people that use it with perfectly acceptable results... Again the witchcraft and superstition pops up. And why would the oil the school gets have anything to do with the condition of donated engines you disassemble?

 

+1 for the Super Tech

 

I forgot to mention, changing to a heavier viscosity than the manufacture suggests has the potential to cause problems. In the winter, the engine will run "dry" longer after an overnight sit, as it is hard to pump thicker oil that is cold and get it distributed through out the bearings, cams, etc. Not to mention the vvt-i controls.

Sometimes quieter does not imply better...

 

The school buys brand new engines from the factorys to train on. They have maybe 5-6 hours of total run time. 90% are fords or hondas

 

Pennzoil and quaker state are known to cause a "waxy" coating on parts aswell as sludge. Do some research. The platinum stuff may be MUCH better but base line pennzoil and or quaker state is some garb...

 

+1

And they sludge up in the classroom environment?

I've been using PYB (Pennzoil yellow bottle) for tons of miles in several vehicles. Just dont go wild with the drain intervals and it seems to work well. Plenty of people actually recommend a short run of it to clean out sludged engines. I dunno about you guys but I cant justify $30 + Oil changes for these trucks especially from the people who change at under 10,000 Miles. Its always amusing to see people justify changing their oil because its turned black after 5/6/7 thousand miles. These tacomas aren't particularly hard on oil.

 

I run 5-30 synthetic in the winter time and 10-40 while it's hot not saying it's better or worse but it's been changed back and forth for 16 years with no problems

 

Then how are they getting sludge and such inside 'em? that's NOT going to happen in 5-6 hours of runtime.

 

I noticed a difference, and I'm sure it's not in my head.

Pennzoil hasn't used paraffin wax in their oil since the 50's my friend. That stuff gets refined out and sold to the candle companies and beauty products producers for big bucks, they sure as hell aren't leaving that in oil, oil companies make bank off selling that paraffin. Engines only sludge when there's something wrong mechanically, usually a blown head gasket or bad PCV valve, or when the oil's not changed often enough. Any oil will sludge under the right circumstances. If Pennzoil really had that much of an issue, why are they still around and the top selling oil brand in the country? Now that Shell owns both QS and Pennzoil, their conventional oil are probably just Shell Helix in a different bottle, which is a VERY good oil.