Anybody used Castrol's 5w40 and/or 5w50??

[MrWideTires]

I want to hear about these oils.. Syntec's 5w40 has good manufacturer approvals, the same viscosity as M1 0w40 but seems like it would not shear as bad. The 5w50 just looks interesting.

 

[killagt]

i never seen a 5w50 before ?

 

[jeffie]

Where did you find the 5w40 at?

 

[MrWideTires]

I can find the 5w40 and 5w50 at Advance Auto and Autozone in my town..

 

[silverrat]

Usually 90% percent of the Audis and VW that come into the shop use Castrol Syntec 5w40. It's a popular oil for these cars and they seem to run on it fine maybe needing a litre top up in between.

5w50 weve used in high mileage Ford Trucks and usually give it to the older Land Rovers. Some Roush Mustang came in and that's the recommended oil for it.

 

[killagt]

what kind of oil is that ? im kind interest in 5w50 then 20w50.

 

[94supraonchrome]

I ran the Castrol Syntec 5W50 in a Baja boat with a 5.0 MPI a few years ago. I liked it. More companies should make the 5W50.

 

[lipadj46]

The 5w40 is nothing spectacular from VOAs and UOAs I have seen, I would choose Rotella any day of the week. I would rather use Mobil 1 15w50 instead of the syntec 5w50.

 

[94supraonchrome]

I used the 15W50 Mobil 1 EP in the same boat. Good stuff too and I do like it better than the Syntec. Just wish it was 5W50, but 15 will work, better than 20......

 

[glxpassat]

You can get Pennzoil Platinum 5w-50 from NAPA. I think it's better than the Syntec.

 

[addyguy]

An old member here (Mori) went 120k miles in his Audi with 10k mile changes of Syntec 5W-50. Internals were spotless.

Pics are all over this site, in different threads.

 

[aquariuscsm]

Originally Posted By: killagt
what kind of oil is that ? im kind interest in 5w50 then 20w50.


Hey killagt,getcha a jug of Mobil 1 15W50. It`s a "thinner" 50 wt oil,and if you`re wanting to run a lil heavier of an oil,it`s some awesome stuff! Plus a jug of it is cheap at Walmart.

 

[Jerry]

There's a full synth Motorcraft 5w-50 for GT500s as well.

 

[twigdog]

I've had good results with the 5w-50. It's a smooth running oil. Had to sub mobil 15w-50 today though because wal-mart didn't have any 4/5 qt jugs in stock.

 

[SecondMonkey]

I've found the 5w50 Syntec at K-mart...nowhere else. Thinking about using it in my Jeep...

 

[MrWideTires]

Does the 5w50 shear to a 40wt quick??

from what I can see... its cold viscosity (40C = 87.6cSt).. it seems like it is the ONLY 50wt oil that has decent cold viscosity!!

WAY thinner than RL's 5w50, even thinner at startup than RTS5w40.

I find it hard to believe that Castrol was able to make an oil with such a great (beautiful) spread using all GroupIII, I think it has to have some Group IV in it.

I might have to give this oil a try

 

[08_SHELBY]

I just put 5w50 Syntec in my Shelby GT500. I Found it at Autozone. I will look for the PP at NAPA. Thanks!

 

[fdcg27]

Meijer clearanced Syntec 5W-50 a couple of years ago.
For $1.66/qt, I figured it would be fine for the van in warm weather, and it did seem so in use.

 

[Nickdfresh]

I used SYNTEC 5W-50 to control burning in an old, previously abused Honda Civic I had, and provide decent cold starting. It burned only slightly less than Mobil1 10W-30, but other than that, I can't say I noticed any difference between 5W-50 and other, lighter weights of oil...