Dan B
Amateur
Name : Dan B
Joined : 2022-01-11
Post Count : 27
Merit : 0
 | | Subject: 98 riv 10w30, 04 regal GS 5w30 Sat Apr 30, 2022 4:23 pm | |
| Obviously both sc 3800 but why the different oil recommendations? Taken right from the oil fill cap 98 riv says 10w30 04 gs says 5w30.. | |
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albertj
Master
Name :
Location : Finger Lakes of New York State
Joined : 2007-05-31
Post Count : 8606
Merit : 180
| | Subject: Re: 98 riv 10w30, 04 regal GS 5w30 Sun May 01, 2022 9:19 pm | |
| - Dan B wrote:
- Obviously both sc 3800 but why the different oil recommendations? Taken right from the oil fill cap 98 riv says 10w30 04 gs says 5w30..
Don't overthink it - and maybe talk to a tech or service writer at your local GM dealer. They should tell you that GM changed the spec from 10w30 to 5w30 some years ago and will use that oil as the fill on your Riv is you bring it in for an oil change. You will also see details about use of 5w30 in your owner's manual - it has always been listed as an optional oil for the stated temperature range. I use 5w30 in the winter, 10W30 in the summer.
Last edited by albertj on Mon May 09, 2022 1:48 pm; edited 1 time in total | |
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Spacecowboy067
Enthusiast
Name : Luis
Joined : 2021-06-12
Post Count : 105
Merit : 4
| | Subject: Re: 98 riv 10w30, 04 regal GS 5w30 Mon May 09, 2022 1:38 am | |
| It's a 3800, it'll take whatever oil you throw at it. More important part is being consistent with brand, different companies might use different detergents that could clear up the gunk in your system. Which sounds good, until you start leaking by the pint every week | |
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| | Subject: Re: 98 riv 10w30, 04 regal GS 5w30 | |
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