20w50 oil for LT1? - LS1TECH - Camaro and Firebird Forum Discussion

Chevrolet Camaro 1967-2002 The forum for diehard Camaro fans

20w50 oil for LT1?

Thread Tools Search this Thread
Old 10-15-2011, 11:21 AM   #1
Teching In
Thread Starter
Join Date: Sep 2009
Posts: 22
Default 20w50 oil for LT1?

I hadda mechanic recommend I put Castrol GTX 20w50 in my LT1 with 147k miles. If it makes a difference I have headers and an air intake system on it. I hadda do an oil change anyways so I used his recommendation but with the viscosity I'm running at 70psi oil. Highest it'll go in acceleration is like 75. I'd been always running 10w30 and that always kept me at a comfortable 40psi. I see online people say you can and can't use it. I thought giving I have 147k miles I'd be okay but 70psi is making me uncomfortable. Should I switch back? I'd hate to make the engine work any harder.
cjwalker28 is offline   Reply With Quote
Old 10-15-2011, 04:12 PM   #2
TECH Regular
iTrader: (9)
Ocala93TA's Avatar
Join Date: Aug 2008
Location: Citrus springs Fl
Posts: 457

I would never use that in mine , And if you live up north keep in mind winter is coming and that oil will be thick as hell when it gets cold . I have almost the same miles as you with a cam etc. and i use 10w30 and have no problems at all with that . just my 2 cents
Ocala93TA is offline   Reply With Quote
Old 10-28-2011, 02:20 AM   #3
Stocker94z's Avatar
Join Date: Nov 2009
Posts: 208

I used 5w30 Mobil 1 full synthetic in my car with 167xxx and my dad in his non-rebuilt 226xxx mile LT1 same oil. I ran the **** outta his car and it begged for more. I'd say 5w30 is fine. No ticks or knocks at all. Quiet as a mouse.
Stocker94z is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Oil for turbo ls1? fccs Forced Induction 24 08-16-2016 10:42 AM
416 LS3 Turbo Camaro w/AC **ALOT OF PICS** Kmspeedie Forced Induction 46 04-13-2016 08:57 PM
Oil Protection Test noer General Maintenance & Repairs 6 06-09-2015 02:34 PM
2009 Cobalt SS Sedan Turbo - SOLD turbo86 Vehicle Classifieds 15 03-12-2013 09:47 AM
Powerdyne Supercharger 6.5 psi complete kit LT1 w/ MSD, water injection, afr, 42lb in cyteone Parts Classifieds 5 04-03-2012 12:47 PM

10, 10w30, 20, 20w, 20w50, 50, 95, camaro, castrol, engine, gtx, lt1, oil, ok, w30

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -5. The time now is 12:50 AM.

  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: