C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1990 owners manual info

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Old Dec 10, 2004 | 09:22 AM
  #1  
Sliding's Avatar
Sliding
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Default 1990 owners manual info

I would like if someone could tell me what does it say in 1990 owners
manual about engine oil.
What approvals are needed?

I'm using Mobil1 5w-50 right now because I couldn't find 5w-30
on croatian markt. Recently I found Mobil1 0w-30 and was thinking
to switch to this oil.

Here are the specs ( almost identical to Mobil1 5w-30 that I found
on Mobile page ):

API SL/SJ/EC/CF, ACEA A1/B1/A5/B5, Ford WSS M2C 913-A/913-B,
General Motors GM 4718M, ILSAC GF-3

cSt@40................56
cSt@100...............10.3
viscosity index.......175
pour point.............- 54
flash point.............234
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Old Dec 10, 2004 | 02:59 PM
  #2  
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hgw1
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You will be fine. I been using the same oil for the last 7 year in my -90
In temperatures from -40 to+ 90 F.

The owner’s manual says: API SG,
Energy conserving II
SAE 5W30


S=gas G =rating the higher the better
L better then G.
Energy conserving II: No problem whit a fully synthetic
SAE 5W W=winter the lover the better. 30 the higher the better
There’s absolutely no need for 0W.

Some links:
http://www.chris-longhurst.com/carbi...oil_bible.html

http://www.vtr.org/maintain/oil-overview.html

Hope this will help you.
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Old Dec 10, 2004 | 03:59 PM
  #3  
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bogus
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From: San Pedro CA
Default

Originally Posted by Sliding
I would like if someone could tell me what does it say in 1990 owners
manual about engine oil.
What approvals are needed?

I'm using Mobil1 5w-50 right now because I couldn't find 5w-30
on croatian markt. Recently I found Mobil1 0w-30 and was thinking
to switch to this oil.

Here are the specs ( almost identical to Mobil1 5w-30 that I found
on Mobile page ):

API SL/SJ/EC/CF, ACEA A1/B1/A5/B5, Ford WSS M2C 913-A/913-B,
General Motors GM 4718M, ILSAC GF-3

cSt@40................56
cSt@100...............10.3
viscosity index.......175
pour point.............- 54
flash point.............234
as you get closer to winter, consider the 0W-30.
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