Whats the best motor oil?

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06-13-2004, 02:04 PM

natronathon

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Whats the best motor oil?

Ive got a 98z28 A4 with 46000 mi on it. What motor oil do you guys reccomend? Ive heard that Royal Purple makes good oils, do they make a motor oil. Should I go synthetic or non-snythetic?

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06-13-2004, 02:15 PM

KrazyDan

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Most go with Mobil 1 10-30 synthetic. thats what i use...........

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06-13-2004, 03:09 PM

KALEL

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this should help... https://ls1tech.com/forums/generation-iii-internal-engine/178985-whats-best-oil-use.html

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06-13-2004, 06:40 PM

davered00ss

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I use Mobli-1 5w30. Don't think it is the best, but close. I have heard bad things about Royal purple. Amsoil is suppose to be good.

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06-13-2004, 06:52 PM

MadMike

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Go with Amsoil - absolute best stuff out there, expensive tho. i use 5w-30.

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06-14-2004, 01:10 AM

98DroptopSS

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Mobil 1 5w-30

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06-14-2004, 01:12 AM

jrp

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Quote:

Originally Posted by Beast

this should help... https://ls1tech.com/forums/showthread.php?t=178985

or just read any post by Patman.

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06-14-2004, 01:10 PM

gymratt

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German Castrol Syntec 0-W30 and K&N oil filters. Lots of great reading on this oil on ls1tech and bobistheoilguy.com

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06-15-2004, 11:25 AM

RUSSH

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I use Mobil 1 10w-30 on my 98. I'll probably switch to Royal Purple though next time around.

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06-15-2004, 11:38 AM

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Patman

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If you're going to put Royal Purple in your LS1, I highly recommend their Racing 41. It's much better than their regular 5w30 and 10w30 street oils.

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06-15-2004, 11:43 AM

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sawedoff

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Here's some links from the LS1Tech search engine on that frequently asked question:

https://ls1tech.com/forums/showthrea...=Neo+Synthetic

https://ls1tech.com/forums/showthrea...=Neo+Synthetic

https://ls1tech.com/forums/showthrea...=Neo+Synthetic

https://ls1tech.com/forums/showthrea...=Neo+Synthetic

By the way I've been using Neo Synthetic oil, in 0w-5 since my car was new in 99'. I absolutely love their stuff.

Last edited by sawedoff; 06-15-2004 at 12:12 PM.

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06-15-2004, 12:02 PM

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Mike02Z

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Quote:

Originally Posted by Patman

If you're going to put Royal Purple in your LS1, I highly recommend their Racing 41. It's much better than their regular 5w30 and 10w30 street oils.

When I first purchased my LS1 I went out and bought Royal Purple 5w-30. Luckily I read this forum before I put it in my LS1. I went out and bought the German Made Castrol Syntec instead. Since I already had the Royal Purple I figured it would be OK to use in my Blazer. Well, maybe it's just me but it seems that my oil pressure is lower than it was before I put in the Royal Purple. I used to run right around 40lbs when the engine was at temperature and at idle using Mobil 1 5W-30. Now I run about 30lbs with the Royal Purple. Not a big deal since it's a lease but I don't think I will use the 5W-30 Royal Purple even in my daily drivers any longer.

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06-15-2004, 12:36 PM

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RUSSH

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Quote:

Originally Posted by Patman

If you're going to put Royal Purple in your LS1, I highly recommend their Racing 41. It's much better than their regular 5w30 and 10w30 street oils.

Cool...thanks. Do they sell it where ever the regular RP is sold?

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06-15-2004, 01:33 PM

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chupr0kabra

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Quote:

Originally Posted by Mike02Z

Well, maybe it's just me but it seems that my oil pressure is lower than it was before I put in the Royal Purple. I used to run right around 40lbs when the engine was at temperature and at idle using Mobil 1 5W-30. Now I run about 30lbs with the Royal Purple. Not a big deal since it's a lease but I don't think I will use the 5W-30 Royal Purple even in my daily drivers any longer.

When I used Royal Purple (10W-30), I saw my oil pressure drop about 10 lbs and had an increase in oil consumption. I swapped out a new PCV valve and switched to MobilOne 10W-30 and consumption went WAY down. It might have been the PCV valve, but I've been a little gunshy of Royal Purple ever since.

-Mike