120k service concern

Im coming up on my 120k service on my 2011 v6 4x4. Tomorrow it’s supposed to go in to have the engine oil changed, plugs, front and rear Diff oil change, transfer case, and transmission oil change. My concern is that I’m leaving for a ~2200 mile road trip on Friday, and the last thing I want is for that new oil to maybe break some gunk and shit loose or cause a leak etc. looking for opinions on what others would do/have done. Leave the oil that’s in there or change everything and hope it’s good? Has anyone had leaks or any issues show up after a 120k service or changing any of the oil mentioned?

 

You’ll be fine.

 

Have you done other fluid and required maintenance on a regular basis?

 

Only “service” that has been late were shocks/struts replaces at 115k

 

Can't tell if your serious.
New oil is always good... unless you've never changed it before
My question is, why aren't you doing this yourself? All is easily DIY and you'll know it's done right!

 

I’ve seen new oil cause leaks on previous vehicles. I would 100% do it myself if I had time, but I work 2pm - midnight every day until then and have an overwhelming amount of shit to get done between now and Friday morning.

 

OK
If you're that concerned leave the old stuff in there and change it when you get back. It's a Tacoma it'll probably be fine either way. Mine has 118,000+ and needed suspension and brakes work no engine worries!

 

I'm with robssol. I would be more concerned about someone else doing the work and making a mistake than I would be about the new fluids.

 

I hope I'm not reading that the engine oil hasn't been changed in 120k miles.....if that's even possible

The only thing to worry about doing is a full trans flush on an automatic trans, higher mileage auto transmissions can get damaged from doing a full flush if they haven't been serviced religiously. Better to do a drain/fill in that case.

The engine, diffs and t-case will not leak or be harmed in any way by putting fresh fluids in. It's much, much riskier to continue racking up tens of thousands of miles on really old and worn down oil than it is to change them out for fresh oil.

The diffs, t-case and (manual) transmission are super easy to do yourself if you're concerned about a shop doing a poor job. It's as simple as drain and fill, and replace the crush washers on the plugs. Changing the engine oil is a little more complicated than those but still very doable.

 

Lol engine oil has been changed every 5k since I got it and I have all service records showing on time from the previous owner I know I would have no trouble doing the changes myself I seriously just don’t have time

 

You are making up crap in your mind. Regular maintinence does not cause mechanical problems when done correctly.

You can wait until you get back from your trip to do everything yourself. Don't pay a dealer hundereds of dollars for something easy to do yourself.

My guess is this service is running you around $1,000. It would probably cost $200 to do it all yourself.

 

The one and only reason I ever worry about doing a fluid change right before a big trip is <me> making a mistake, like forgetting a plug gasket or something stupid. For that reason I try to do an oil change a couple days at least ahead of actually leaving just so I can drive it on a commute or something like that just to make sure. Otherwise fresh fluid seems like a good idea to me.

 

What is maintinence?

 

Good point, happened to me once where I put the rear diff drain plug back in hand tight, proceeded to fill it up and tightened down the fill plug but neglected to tighten down the drain plug. Drove it that way to and from work for a couple of days, and noticed an oil stain one day when I parked next to the spot I normally park in. Glanced under my truck and saw the rear diff had a drop of oil coming out the bottom Luckily I always keep a quart of 75w90 in my truck in case I ever need it on a trail, so I was able to deal with it right there. Only took a couple of pumps of gear oil to fill it back up so it wasn't really low, but I got damn lucky that plug didn't come out completely or I'd be looking for a new rear e-locking diff, or worse if it had seized up while I was on the freeway.

I have a detailed check list now for whenever I do my oils, even for the little things like tightening the plugs. Never know when something small might distract you from a critical step in the process.