tire pressure & engine oil

[highlander123]

come back to deal for a free oil change two time, the deal alway set my tire pressure at 38 psi (cold tire) and filled engine oil above max level and used 5-30w, Is that ok?

[guytdt]

What year and how many cyclinders?

For 2011-2012, 4 cyclinders use 5-20 and 6 cyclinders use 0-20.
If you use 0-20, Toyota recommends change it after 10K miles. If 5-20w, then 5K miles.

So I guess it's ok, just change it every 5K with 5-20.

[highlander123]

Originally Posted by guytdt

What year and how many cyclinders?

For 2011-2012, 4 cyclinders use 5-20 and 6 cyclinders use 0-20.
If you use 0-20, Toyota recommends change it after 10K miles. If 5-20w, then 5K miles.

So I guess it's ok, just change it every 5K with 5-20.

2010 6 cyclinders toyota recommends 5-20w, I don't know why the dealer use 5-30w, I guess 5-30W is only one engine oil dealer have.

[sweeneyp]

the 08-10 use 5-20 (w/o towing package) and 5-30 (w/ towing package). you need to chance it every 5k with that type of oil.
The 2011-2012 use synthetic oil (not sure on the type, guytdt said though) and can be changed every 10k. Apparently synthetic oil helps them get a little more mpg out of the engine and change the oil less often since they do are doing the free oil changes now (to save money), so just be aware you have to change it at 5k and not 10k with regular oil.
About the max line, as long as they didn't really go over the max line you should be fine. If it's really over it, that can causes problems (leaks, gaskets issues, etc...). If you think its bad enough, you can always drain a little with the drain plug (could be messy though trying to put the plug back in while there is oil still in the engine.)
38 psi seems high for a tire in cold weather because as soon as heats up the air pressure is going to go up. I've never filled mine up past 33 psi and that is what my dealership always sets it up as.

[CPSDarren]

I don't think the dipstick is real accurate. I just did my own change at 6 months. Manual said 6 qts. without filter. That's almost exactly what came out. At 5.5 qts added, it still reads around full on one side of the stick and way overfull on the other. I've driven it a number of times and same result. I think the 0w-20 maybe is so light it wicks up the tube or something more easily. Although the factory fill oil read normally, so maybe it just needs to get a little dirty or something I dunno. Either way, it's a lot harder to read than other cars I've had.

[highlander123]

Originally Posted by sweeneyp

the 08-10 use 5-20 (w/o towing package) and 5-30 (w/ towing package). you need to chance it every 5k with that type of oil.
The 2011-2012 use synthetic oil (not sure on the type, guytdt said though) and can be changed every 10k. Apparently synthetic oil helps them get a little more mpg out of the engine and change the oil less often since they do are doing the free oil changes now (to save money), so just be aware you have to change it at 5k and not 10k with regular oil.
About the max line, as long as they didn't really go over the max line you should be fine. If it's really over it, that can causes problems (leaks, gaskets issues, etc...). If you think its bad enough, you can always drain a little with the drain plug (could be messy though trying to put the plug back in while there is oil still in the engine.)
38 psi seems high for a tire in cold weather because as soon as heats up the air pressure is going to go up. I've never filled mine up past 33 psi and that is what my dealership always sets it up as.

2010 highlander w/o towing package, but dealer used 5-30w, I asked them, they told me 5-20w and 5-30w is not much different.

[sweeneyp]

Originally Posted by highlander123

2010 highlander w/o towing package, but dealer used 5-30w, I asked them, they told me 5-20w and 5-30w is not much different.

I wouldn't worry about it, its not a big enough difference to worry about. It has to do with the viscosity of the oil. If you were towing heavy loads regularly, it might try to get the correct one, but under normal conditions its fine.

[05Moose]

And be sure to tell them about the tire pressure issue. They usually just have an hourly person doing the oil changes and it sounds like they don't know what they're doing on the tire pressures. Or maybe they're using a bad gauge (or yours is off? or is it on the paperwork that they set it to 38?). Anyway, they should be following what's on the door placard. While the tires can easily go up and over that pressure, there are some positives and negatives that go along with that. The positive is that you'll see better MPGs. The rest are all negatives: harsher ride (talking extreme pressures here not if they were set to something like 33psi), uneven tire wear, less traction, and longer stopping distances (critical in an emergency). So I would bring it to their attention.

[peterk9]

Originally Posted by highlander123

come back to deal for a free oil change two time, the deal alway set my tire pressure at 38 psi (cold tire) and filled engine oil above max level and used 5-30w, Is that ok?

38 psi seems too high in my opinion. As has been stated, you should follow the pressure recommendation listed in the manual and on label attached to the vehicle.

[highlander123]

Originally Posted by peterk9

38 psi seems too high in my opinion. As has been stated, you should follow the pressure recommendation listed in the manual and on label attached to the vehicle.

you are right, 38 psi is too high, I away set it back to 30 psi after go home. but I have went back dealer change engine oil three time, they set it 38 psi three time, I don't think that is a accident. dealer just want to blow my tires and buy the new from them.

[CPSDarren]

If you don't notice an issue with ride comfort, 38 psi should be fine as long as it's not over the max sidewall inflation pressure. On my Dueler H/L 400s, the max is 44psi cold. Some SUV tires are as high as 51psi cold max. "Cold" commonly refers to the pressure at the start of the day before you drive it, rather than an absolute temperature. I run mine at 40-42 cold for fuel economy. Anywhere in between the recommended pressure on the door label and the max sidewall pressure is a tradeoff that is basically up to you.

Going beyond the max cold pressure (which is not a burst pressure) can adversely affect tire wear and possibly grip. Unless you're going for max fuel economy, the recommended pressure on the door frame label is probably the best tradeoff of all factors for most drivers, just be sure to keep it there throughout the year. You might find that 38 psi level in the summer ends up being about right in the winter if you are lazy like me, depending where you live;-)

[TrailDust]

Definitely depends on how soft or hard you want your ride to feel. For me, 35 PSI has always been the magic number, with a compromise on ride quality versus gas economy and getting even wear out of the tires. My Duelers just passed 40,000 miles with even wear on all four.

[peterk9]

Originally Posted by TrailDust

Definitely depends on how soft or hard you want your ride to feel. For me, 35 PSI has always been the magic number, with a compromise on ride quality versus gas economy and getting even wear out of the tires. My Duelers just passed 40,000 miles with even wear on all four.

The factory recommended psi on my 2011 Explorer is 35.

[becks]

I run my 255/55 19's @ 33 psi year round in the NE, and rotate every 7-10k miles.
If I lived in Sunny/Warm Cali like TD I would probably run at 35 psi as well. I have tried 35 psi but, the cold winters here make it a stiffer ride.

[TrailDust]

Originally Posted by becks

I run my 255/55 19's @ 33 psi year round in the NE, and rotate every 7-10k miles.
If I lived in Sunny/Warm Cali like TD I would probably run at 35 psi as well. I have tried 35 psi but, the cold winters here make it a stiffer ride.

If you ran them as high as I do with that cold weather your dentist would have to replace your fillings shaken loose.....