I have my first oil change due and going synthetic. Shop I work at has AMSOIL. What's people's preference on all the oils cause I'm gonna do them all. Diffs, transfer case. Flush the radiator. Trans maybe? 133,000. Unknown history.

AMSOIL all around if you can afford it. I think they recommend 75w-110 for the rear.
This will give you a good idea:
J.A.'s Toyota 4Runner Highlander and Sport Edition Informational Website

Toyota Long Life for coolant.

I have researched this to no end.....OIL. FWIW i have a 93 Civic with 280,000 miles on it that burns 1 qt every 1000 miles. I have not changed oil in it for 55,000 miles. I DO change the filter every 6-10,000 though. List of oils I have used for top offs. USED 20w50 motorcycle oil, USED 5w20 from wifes Odyssey, 75 90 GEAR OIL,Non-detergent SAE 30 weight, ADvance Auto oil, Synthetic , Rotella 15w 40 Deisel,PEAK, QS, Pennzoil, Castrol, Havoline,Valvoline, Generic stuff Menards sells, STP, 10w30, 5w30,etc etc. Anything and everything. IT looks BRAND NEW inside the head. No exaggeration. BRAND NEW!!!RUNS like a champ on any oil. Not even a tad of varnish,crud, goop, looks like brand new metal straight from the casting.You'll be fine with whatever meets specs.Or in my case youd be fine with whatever is oily....key is frequent intervals of lubrication. Dont waste your money on AMSOIL or Royal Purple or whatever the heck else marketing ploys for engine/trans protection is out there.

TRUH TRUH TRUH TRUH TRUTH?! NO.

TR TR TR TROLLLL>

Get the hell out of here.

Use what you trust.

I have used castrol GTX forever in my cars. i change every 3k, sometimes up to 5k if i forget or get lazy.

Im switching over to chevron since costco is having a sale on that. OEM filters all the way too.

I've been using Royal Purple oil and K&M oil filters. But it costs me $75 to do my own oil change! So I may switch

Well he is right that OP (and everyone else) will be fine with whatever meets Toyota SPECs. Toyota knows better than anyone what should be used in the their vehicles and in the United States fluids are standardized into set categories / types so you don't have to go with a specific brand, just the right type. I generally try to go OEM.

I'm using oem filters, and I've been running Mobil 1, but I just switched to Mobil 1 Extended Performance. It says it's good for 15,000 miles. I'm going to try and run it for a year, and then change it. I'll probably change the filter in 6 months and top it off.

Haven't done engine oil yet, but bought Amsoil for front/rear diffs, t-case, and tranny (full swap). Here's what I bought:
-Trans Fluid: ATFTP-CA Synthetic Multi-Vehicle Automatic Transmission Fluid (5 gal)
-Front Diff/T-Case: SVGQT-EA SEVERE GEAR 75W-90 Synthetic EP Lubricant (3 qt)
-Rear Diff: AGLQT-EA SAE 80W-90 Synthetic Gear Lube (3 qt)

Expensive! Total came out to $360! Here's the link I used for this info: Synthetic Fluids Toyota 4Runner Information

Have some Mobil 1 5W-30 full synthetic motor oil left over from previous vehicle. I'll be using that once it's ready to change oil.

What's good a good weight for this cold? Engine oil that is........

The only reason I asked about about AMSOIL is cause we have it at the shop. I can get my hands on whatever I want at wholesale. Prolly just go with Mobil1 synthetic and a Toyota filter.

I have used Amsoil for the last 15-20 years. It's an outstanding oil...and if you use it correctly, it doesn't cost any more than a cheap Wal-Mart oil change. I do the extended oil changes...cost me less than $45. I'm good for 6 months or 10,000 miles...that only $90 a year on oil...Toyota dealership charges me $10.00 for labor/lube...grand total of $110 a year.

If you go 3 months or 3,000 miles...you need a minimum of 4 oil changes a year. Paying some untrained want to be grease monkey at Wal-Mart (hope no one works at Wal-Mart...the guys at ours are luck to find the hood release) $25.00 to put who knows what kind of cheap crap oil out an unmarked 55 gallon drum. No thank you...I'll spend the extra $10.00

I have experimented with extended use. Being in the Army...I learned that's all they do. Every 6 months we pulled samples...if they passed...the oil stayed...only if it failed, did we change the oil. I figured if its good for 1/2 million dollar engine that gets driven hard...it should be ok for my DD. Therefore, I sent my oil to a lab to be tested to see long I could go on my Amsoil...with changing just my filter every 10,000 miles...At 30,000, although the silicon levels were getting close to the max...my oil was still "good" according to the lab work and could have even further, but I stopped at that point. (Note: after 10,000 miles...I sent a sample in every 5,000 miles). And I'm sure other oils can do this also...Mobil 1, Royal Purple, etc...so, I really think if you use a good name band oil...it's a matter of choice/opinion ...whatever gives you that warm fuzzy feeling

Now, I don't go 30,000 miles every oil change.. I change my oil very 6 months no matter what the mileage is...now days I'm lucky to drive 6-700 miles a month. But it's a good feeling knowing if a had to...I could go a lot longer. And I have the best oil (in my opinion) protecting my engine.

use royal purple for this sole reason: IT'S FREAKIN PURPLE!!!

seriously though... I'd be all over dyed oil. "hey look I'm putting red oil in my engine..." "that's ATF! stop!"

"no it isn't.... "

If it were me and I had the Amsoil option, I would run Amsoil in all of the driveline components and whatever you prefer in the engine. There are some real, heavy duty, advantages to synthetics in gear oils. Amsoil, Redline, etc. make quality products. When speaking about modern 'synthetics' and true synthetic engine oils, it is more about the additive pack than the base stock. Pretty much any store bought API licensed oil will work well.

I just run the bulk oil that the dealer uses. Currently that is Chevron 5w-30. I also add a quart of Lucal Oil Stabilizer though. With 347k miles it really helps keep the engine quiet.

mobil one is all good....but has anyone ever used KENDALL Synthetic Blend Motor oil??? Price wise it's pretty good but need confirmation on usage...thanks for the input.