5W-50 oil?

[ekindbest]

when I talk to one of the guy who rebuilds my turbo, he said I need to go to 5W-50 oil. 5w-30 cuase my turbo to fail. Is that true? is it even safe to switch to 5w-50??? I can't even find Mobil1 synthetic 5w-50 in pepboy, autozone, nor strauss. All help is appreciated.

[Rombomb420]

That doesn't sound right to me but wtf do I know, do you have a larger oil pan?

[FITGT]

Your engine is not made for 50 weight oil. Get an oil cooler.

[slvrcelicagt00]

isn't 0w-40 safe to run?

[ekindbest]

I installed the oil cooler long before I got the turbo. I had the oil cooler installed behind the driver side foglight where the Injen CAI filter used to be. The reason I did that is because I don't want the oil cooler to cook up(it gets really really hot) the Intercooler. And I assume there's enough airflow since I got the TRD front there's another hole next to the foglight.

http://i28.photobucket.com/albums/c211/ekindbest/IMG_1322.jpg

[00GTShope]

I run 5w50 Mobil 1 synthetic in my turbo car. Runs fine for me. I always get it at Walmart. cheapest I can find.

[Hetts]

50 weight is too thick for our cars

[Genomaxter]

I believe is recommended to just change your oil more often than to go with another weight. 5w30 is plenty good for your car, you just need to change it more often.

[dirtbiker02171]

when refering to the 2nd number as in 50 for 5w50 it isnt so much the weight we are talking about here it is simply the boiling point of the oil. The weight is almost exactly the same as any synthetic 5w30 just 5w30 will reach its boiling point much more quickly, and possibly fry any sort of forced induction or nitrous car. I run amsoil 5w40 synthetic with a 75 shot with no problems and have friends running the same oil in their turbo honda's and they saw lower oil temperatures by up to 20 degrees from the 5w30.

[Genomaxter]

If your running hotter on 5w30, i believe you need a more efficent cooling system. The whole thing about "boiling point" with the way you see it is that 5w30 boils at a lower temp, but if you go to 5w40 not only does it boil at higher temps, but that also means your engine is running at a hotter temp. So thats not possible to run cooler by just raisng the boiling point. All I know is Boosted recommends 5w30 and 5w40 for colder regions where is gets below freezing and changing your oil roughly every 2500 miles.

[many]

when refering to the 2nd number as in 50 for 5w50 it isnt so much the weight we are talking about here it is simply the boiling point of the oil. The weight is almost exactly the same as any synthetic 5w30 just 5w30 will reach its boiling point much more quickly, and possibly fry any sort of forced induction or nitrous car. I run amsoil 5w40 synthetic with a 75 shot with no problems and have friends running the same oil in their turbo honda's and they saw lower oil temperatures by up to 20 degrees from the 5w30.

Very true...
If your running hotter on 5w30, i believe you need a more efficent cooling system. The whole thing about "boiling point" with the way you see it is that 5w30 boils at a lower temp, but if you go to 5w40 not only does it boil at higher temps, but that also means your engine is running at a hotter temp. So thats not possible to run cooler by just raisng the boiling point. All I know is Boosted recommends 5w30 and 5w40 for colder regions where is gets below freezing and changing your oil roughly every 2500 miles.

What are you talking about? 5W40 for colder weather? I think you have things mixed up (to put it lightly)...

[ekindbest]

I'm told by the turbo shop, that 5w-30 reach its boiling point faster than 5w-50. And he also told me it's the same thing just different boiling point.

[Genomaxter]

Many... the one who said 5w40 was Boosted in another topic and he knows alot more than you for sure. All the numbers on the bottles mean is viscosity at low temp (first number) and viscosity at high temp (second number). The only difference between 5w30 and 5w50 is viscosity at high temp. The temperature itself is the same (which they base it at 100 degree C).

[Hetts]

http://auto.howstuffworks.com/question164.htm

whenever it heats up, the 5w50 is "thicker/gooier" than what you want for our engines. although it gives better protection where the oil gets to, it doesnt flow as well to everywhere you need it. from what i recall, this is especially true with a gts

[6speedGTS]

You want the best flow, lower viscosty the better, flow will remove more heat faster. but you will need an bigger oil cooler, from the sounds of it.

[Rombomb420]

So is this basically a universal safeguard that any FI celica should have an oil cooler ?

[monkeywrench]

Under what conditions did the turbo fail? What kind of turbo?

[ekindbest]

turbonetics T3....not water-cooled thought just upgraded to one.

[danGTS]

Many... the one who said 5w40 was Boosted in another topic and he knows alot more than you for sure.

lol!

I am not putting in doubt the knowledge of Boosted at all BUT, just to remind you, you don't measure the knowledge of a member with the number of posts!! I mean, anyone here could be a top notch engineer with tons of experience with cars without you knowing it!

BTW, if it's in cold temp, 5w30 is good but 5w40 seems a bit thick imo ..

[robare99]

I run Mobil 1 5W 50 full synthetic as well. I couldn't find 5w40 in full synthetic in any brand

[wts]

not water-cooled thought just upgraded Probably coked the bearings then.

[b18b1tranny]

amsoil ATM 10w30 with TRD oil cooler does the job with 75 shot since 4 years. Of course, nitrous is not like turbo but still the oil cooler heats the oil quickly (I have a moroso pan and there is almost 7L total) Oil is now always under 220, normal driving is 190 to 210. On the strips it keeps around 205-220 MAX. It wasn't the case without it, it went as high as 235-240 on hot summer days on the track.

You don't need a heavy oil if it's not hot enough to keep it thin, else you lose flow thus protection.

Also I never added one once of oil in 4 years, always clean and full. But I only drive around 2000 miles per year and car has 21 000 miles total... I change the oil once a year.

GL

[norazry]

hello everyone..I live in a country situated at the equator with hot and humid climate. Run on mobil 1 0w- 40..the owner manual stated 5w- 30 is the best, so i run on 0w - 40 thinking of my country has hot weather most of the time and the other mobil1 availble is 5w- 50..Im confused..

[Barbarian]

Hi Norazry.... we live in the same city!! :) I'm using Motul 5w30...... btw, do check out www.myjsoc.com

[danGTS]

amsoil ATM 10w30 with TRD oil cooler does the job with 75 shot since 4 years. Of course, nitrous is not like turbo but still the oil cooler heats the oil quickly (I have a moroso pan and there is almost 7L total) Oil is now always under 220, normal driving is 190 to 210. On the strips it keeps around 205-220 MAX. It wasn't the case without it, it went as high as 235-240 on hot summer days on the track.

You don't need a heavy oil if it's not hot enough to keep it thin, else you lose flow thus protection.

Also I never added one once of oil in 4 years, always clean and full. But I only drive around 2000 miles per year and car has 21 000 miles total... I change the oil once a year.

GL

I thought 240 F oil temp was fine ? I though oil was mad to protect til higher temp that that. Well, waybe not to 300F but mor ethan 240F ..

Also, how do you manage to fit 7L in that pan ? I barely fit 6 L in it ! Is the oil cooler and bigger oil filter taking much more oil ?

[GSBoek]

The original topic has probably been resolved by now, but I just wanted to point out as per the Elise manual it recommends 5W40 for regular driving and 10W60 for track use. A 2ZZ is a 2ZZ no matter what car it sits in, so I'm quite sure the 5W50 would be ok for a Turbo 2ZZ.

[b18b1tranny]

Moroso pan + toyota v6 filter with ADBV + cooler = 6.7 or real close too. That's almost 7 liters total!

[b18b1tranny]

The original topic has probably been resolved by now, but I just wanted to point out as per the Elise manual it recommends 5W40 for regular driving and 10W60 for track use. A 2ZZ is a 2ZZ no matter what car it sits in, so I'm quite sure the 5W50 would be ok for a Turbo 2ZZ.

Best to check with oil temp gauge and pressure gauge.

Turbo 2zz used in a track is not the same has a daily driver. Thick and cold oil doesn't protect parts at start-up. On track usage, they do wait till engine is fully warmed, not like a daily driver.

[kortik]

well get Enios 0w50 oil then

[GSBoek]

Best to check with oil temp gauge and pressure gauge.

Turbo 2zz used in a track is not the same has a daily driver. Thick and cold oil doesn't protect parts at start-up. On track usage, they do wait till engine is fully warmed, not like a daily driver.
But then the 5W50 will presumably be the same at coldstart as the the 5W30 Toyota recommends for the Celica and the 5W40 Lotus prescribes. The 10W60 is for dedicated track only where they do indeed allow the engine to warmup.
All I'm saying is that the 5W50 won't be bad for a daily driver Turbo 2ZZ.

[SuperDave]

I thought 240 F oil temp was fine ? I though oil was mad to protect til higher temp that that. Well, waybe not to 300F but mor ethan 240F ..


240F is still fine. Ideally you want to keep oil temps below 250F

[b18b1tranny]

When I mean cold, it's not -20, it's whenever under normal operating temp(190-220) for 99% of engines. 50 weight oil is way thicker at 200F then 30 one. it's doesn't flow well, won't protect, won't cool off internal parts. So if you're always under 230-240, you don't want a heavy oil, it'll just wear off parts faster!

Heavy oil is, and only useful if your oil is running hot all the time, and you need to monitor with a oil gauge not your coolant. Let's say oil's average operating temp is 250+, then you absolutely need 40 and even 50 weight oil. But if you are running normal temps, keep stock 30 or 40 weight, both are fine for our engines. Also, if oil is higher then 240, try cooling it before boosting weight. And keep monitoring with gauges.

I'm not 100% sure, but F1's oil is 10 grade to maximize flow and internal cooling.

The thing to really remember is : heavy oil (50+) is not desired for normal driving and short trips. Even inspired driving needs a oil temp and psi gauge to justify the extra weight.

[lVlemphizStylez]

out of the 3 turbo setups I've had...I've ran 5w30. It never caused any of my turbos to fail, from a 57 trim t3/t4, a precision sc61 and now a journal bearing 50 trim. And I ran all these setups VERY hard at the track weekly. All this talk about needing thicker oil is rubbish...Change your oil at 2500-3000 miles and you will be fine. Your turbo failed for another reason...