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Oil - Viscosity - Usage - Brand

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Old Jun 5, 2007 | 01:19 PM
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Default Oil - Viscosity - Usage - Brand

I know the oil issue must've been discussed a thousand times and I've done numerous searches but I still have a bunch of questions:

1. Which viscosity is right for a warm climate like So. California?

My oil temps are in the 220 range when driven normally, up to 260 when I get on it for a long time. I'm planning on putting in a cooler to keep the temps under 240 in extreme conditions.

I'm using Mobil 1 15w50 but I'm concerned that my oil pressure doesn't jump up the way it used to with 10-30 M1. Also, I know M1 is good to about 400 degrees.

2. I really haven't raced it or anything too extreme - I imagine I will go through about 1 quart every 1,ooo miles - does this seem right?

3. I know everyone has a specific brand of oil they're partial to, just curious as to what you use?

Thanks for the help
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Old Oct 17, 2007 | 12:32 AM
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Any headway?
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Old Oct 18, 2007 | 04:16 PM
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LPE recommended the 15w50 M1 and I used to run it but it was too thick in the winter. So now I run the 10w30 M1 all year long with no issues. I think using a quart every 1000 would bother me but a quart is a lot cheaper then a rebuild.
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Old Oct 18, 2007 | 08:55 PM
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Super tech 10w 30 for me, unless they have a bargin bin with cheaper oil, then sometimes a mixture
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Old Oct 19, 2007 | 12:20 AM
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15w50 sounds about right for a stroker motor in SoCal. I run Redline 15w50 in my 402. Try a Baldwin or K&N oil filter if you are concerned about oil pressure. Dunno if your L92 takes the same filter as the LS1/LS2/LS6, but if so, Baldwin B31 is the correct one. I use them exclusively and buy 'em by the case.

A quart every 1000 miles sounds like a bit much, but maybe not for your blown stroker. Do you know where it is going (past the rings and fouling the plugs, into the tb/intake, catch can)?
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Old Oct 19, 2007 | 02:53 AM
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On my FRC I use 10w40 Amsoil. As for the 1 quart in 1K miles, that seems a bit extreme to me. Not usre if that is normal for a stroker, but I would be a bit worried if it was my car.
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Old Oct 19, 2007 | 07:39 AM
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I use Mobile1 15W 50 and it is awesome no issues and it is readily available anywhere!

Thanks,Matt
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Old Oct 19, 2007 | 07:43 AM
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RP 51.

Shahram
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Old Oct 19, 2007 | 08:50 AM
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Another vote for 10W40 Amsoil.
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Old Oct 19, 2007 | 10:00 AM
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I have been running castrol 20w50 and change it every 4-6 weeks...
keeps the motor clean, and is great for the bearings. the less contaminants in the motor the better, says my engine builder.
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Old Oct 19, 2007 | 10:45 AM
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I'm currently running Mobil 1 0w-40 because I have read in numerous places about how much better the 0w is for cold start up and how fast it begins to pump. I have also heard that the German Castrol 0w-30 is supposed to be a superior oil...but it has to be the German stuff. I am waiting for the new 0 or 5w-50 that will be coming out shortly...I believe from Mobil 1 for the McClaren.

Did a lot of reading on Cracked Dino Oil vs. genuine Synthetic Oil...there are lot of interesting reads on it all over the internet. Stuck with Mobil 1 0w-40....but I have used Amsoil and Redline in the past....as for Royal Purple I have heard that it doesn't offer very good resistance to prolonged heat cycles...so being that I run twin turbos I stayed away from it.
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