Whats the reason you want to run something as heavy as 15w50?

In my opinion theres much better grades of oil to use on a 3SGTE. Stick with a synthetic 5w30 or 10w30 and it will work just fine and it will flow through the motor more properly.

Increased wear protection. I'm aware that it will take longer at startup to get the oil to the head and Turbo but I always use OEM filters [I know this doesn't neccessarily negate the problem but should help].
My '93 MR2 Owner's Manual says 10w40. You guys are using lighter weight oil - any reasons for that?

I'd run a thicker oil as opposed to a thinner oil in a turbo car. Heat will thin the oil out and you can easily see a pressure drop from that. I was running a 20w50 last summer for a short amount of time. Other than it tanking a couple seconds for pressure to come up on startup I noticed no other effects and a slight bump in hot pressure at idle.

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Sounds right to me [Pressure bump and time to come up]. Should also help the wear a bit too. My only concern is that Turbo wasn't rebuilt at the time and it may have some oil coking already and I'd hate to starve it.
Anybody think I ought to switch to Mobile1 but stay at 10w40 at least for a little while longer? I'm thinking I should probably just hang on to the 15w50 until the dead heat of the summer when it will need it here - badly. More 3S's die in the summer here than any other season I've noticed [MR2T friends and past experience]. Could just be coincedence but IDK.
I just want my girl to receive the best of treatment.

This post has been edited by DEATH: Mar 12, 2008 - 11:21 AM

the summer killing 3sgtes is heat soak and knock. least thats my assumption.

i'm using a canton racing oil filter relocator and have the lines set up like a triangle. first i goes into the filter, then out of the filter into the cooler then from the cooler to the block. all big hydraulic 10an lines. great oil pressure and havent had any problems yet.

if your concerned with oiling so much get a moroso pan also.

Itchy - what oil you runnin?

mobile-1 10w30, change it every 3-4k miles.

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I'd be inclined to agree with this also.

Itchy.......got a link to that filter relocation kit? I'd like to check that out.

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I am guessing he is probably using one of the 90deg rotating billet.

correct ^ Manny showed me this part from canton.

yup.
nascar uses some of these guys parts.
i figure if its good enough for them, its good enough for me.
ive had mine on the car going on 3 years, and 40,000 miles, and it works like a champ.

Hows about some pics of the setup?? That'd be niiiice.