What weight and brand oil works best

 

depending on your location temp etc. I Use 10-30w per the owners manual.

 

Unless you are flogging the car on a track, 10w30 is fine.

 

use the search button in the upper left corner. Oil has been discussed over and over and over again. Type, weight, synth vs non-synth is all already discussed just find it.

 

Your a n00b and this is your first post so I won't flame you this time, but in the future, please use the search feature at the top right of your screen.

 

20-50

 

i agree with the above posts. kansas summers are extremely hot and humid so I run quaker state 20w50 full synthetic

 

20-50. Do a search on fuel dilution, 10-30 will turn into water quickly.

 

Mobil 15W50 synthetic for the "high performance" vehicle

 

Ditto

 

20w50 amsoil here. I don't think you can go wrong with redline or royal purple either, but I stay away from Mobil1. A couple of the guys above mention it (15w50 is usually mobil1) but i wont use it again. I've torn down a couple of motors (mine and a few friends) and didnt like the abnormal wear i saw. Not 100% sure if it was the oil of course, but I am sticking with amsoil

 

i love this place...we yell at people for not searching yet we all answer thier threads
20 times over

:0 we silly

 

would using a light weight oil like 5/30 or 10/30 cause oil to go past the oil control rings and cause the engine to smoke?

 

I've never had a problem. I run 10w30 on the street (which is where my car is most of the time besides the jackstands) but I run 20w50 for the track. Never had excess smoking or anything with 10w30.

 

Given an aggressive driving style (high rpms, high boost, constant WOT) I feel that 20w50 is much better for the bearings and all of the other internals......

 

castrol gtx 10 30... when it starts to get really hot, which is soon, i might switch to 20 50. maryland weather is freakin cold in the winter and then humid and disgusting like hell in the summer.

 

Even though I use 10w30, I agree with Jeff. After just ~1,000mi, you can already tell the oil is diluted. It has a faint smell of gas and it's not nearly as thick as it was when it was fresh.

 

I use castrol gtx 20-50 all year

 

i think thicker is better because turbos need it and bearings too and i thinks thats zee press with benifit too's

 

any downsides to using 5-30?

 

Summer time Castrol GTX 20W50, fall/winter Castrol GTX 10W30.

 

Richypoo, where was the abnormal wear?

 

Greetings CMSgt Abad,

Mainly on the irons. One motor had some serious wear on the rotor bearings and e shaft lobes as well. These were all "professionally" built motors.

---COL Farrell