Starter

No probably about it. The proof is that all the mfgs. changed their requirements [I]for their same identical engines[I] at the time that the CAFE standards went into effect.

Batosai

Eneos Motor oil... 5W 30

monkeybutt

I switch up a lot now. I used to be a dedicated Mobil 1 or Castrol Syntec user. But after following BobIsTheOilGuy forum, I use whatever and pay attention to the oil change intervals re dino vs synthetic.

Right now CL-S 5-20w Motorcraft semi-synth.
TL 5-30w Maxlife
RX-330 5-30w Supertech synth.
I also AutoRx all the cars and while the others are pretty low mileage the '96TL w/ 140K+ miles runs smoother w/ better gas mileage now than when I got the thing at 60K mi. despite the change from 205/60/15 to 225/45/17.

ChucksCL-S

Been using Mobil 1 5W 30 in the TL and CL and NAPA 5W 30 synthetic in everything else.

nbennettksu

iTrader: (2)

full synth. 5w30

rp_guy

toyota 0W-20 full syn (esso/exxon) in the winter
motomaster 5W-20 full syn (shell) for the summer

make sure you get some good filters too. i'm gonna be buying napa gold filters (made by wix) from now on.

scholtew

+1

VIPCLS

Mobil clean 5000 5w30 non syn every 5k.

GRNMCHN03cl

Amsoil 5w30. One of the best oils out there. Plus I get dealer pricing

half-baked

no one uses lucus? my used it on his civic n it got fucked up

civicdrivr

iTrader: (9)

I've used it in my old Civic, and the car ran like shit. Never ran it again.

artbran

iTrader: (2)

CLS, TL:
M1 15-50 Super Syn in the summer
M1 5-30/0-20 Super Syn in the winter

15-50 due to the thickness and it being good for the engine in the summer heat (learned it from Penske indy car engine builder. He built his own motor in the WRX that he has and a built his own suspension from scratch.) A lot will say that its not good for mpg's however, I get 27-28mpg at 85mph and 35-36 at 55-60 in the summer.

RL:
M1 15-50 Super Syn in the summer
M1 0-20 Super Syn in the winter

Again, 15-50 proves to be very rewarding with mpg's

Supra:
Still have yet to do an oil change. Its on dino oil as of right now after fresh engine build. Probably M1 10-30 or 10-20 Super Syn when it comes time to change the oil (when it gets warmer)

Explorer, 2 box trucks (10 and 16ft):
Whatever is on special

other 2 box trucks (24 Ft):
Generic Synthetic Oil

fender4

see here then use amsoil 0w30

http://www.searchforparts.com/import..._mobil_pao.php

cohill87

syntec 530

AnthraciteBeast

iTrader: (3)

AMSOIL 0W-20 w/ Mobil 1 High Capacity Extended Preformance oil filter

AnthraciteBeast

iTrader: (3)

Yea they're a very highly rated filter. And correct, they are made by WIX.........i work for napa btwlol

Total2f

Royal Purple 5W-20 hands down the best choice. Look at the independent testing or if you watch Horsepower on Speed you've probably seen what numbers they made with it and no other mods on a Camaro. Don't waste your money on Mobil 1 its exactly the same as any bargain basement synthetic oil.

YeuEmMaiMai

lol at the people using synthetic and changing oil every 7K? what is the point? honestly......having access to a SOS lab I can tell you that straight up Dino Oil can easily go 7K in our cars under average driving conditions with no problems.......