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What oil do you use?

I have a 1994 gmc k1500 with a 350 tbi, I was wondering what oil brand and weight do you guys use? I’m having low oil pressure when it is warm , I was thinking about switching to a thicker oil to get my pressure up . What do you guys think? I use chevron conventional 5w30
- Old 94 Turquoise
- Thread
- Jan 7, 2019
- Replies: 40
- Forum: Engine Performance + Maintenance
Low oil pressure and slight stumble at idle

Okay wanted to see some other people’s input on a problem I’m having with my 1994 1500 350Tbi . When I first start the truck up the oil pressure is about 40 but then after it warms up and I’m idling in drive , the pressure goes down to about 10 or almost touching the red. Also my rpms go down to...
- Old 94 Turquoise
- Thread
- Dec 27, 2018
- Replies: 15
- Forum: Engine Performance + Maintenance