What weight motor oil do you run in your Vortec engine?
#31
02-22-2010, 10:39 AM
I use Mobil 1 5w-30 with a K&N Filter. I have about 42psi at warm temp while driving, and 20psi warm at idle.
#32
02-04-2018, 06:40 PM
Recomended oilfield 4.3vortex
I had a 95 s10 blazer with 224000 when I sold it and ran strong I used Mobil 1 10w30 and now have a 2001 4wd with 4.3vortex high output and use the same brand and weight
Last edited by tomegalla; 02-04-2018 at 06:51 PM. Reason: Forgot to mention oil pressure
#33
02-04-2018, 06:54 PM
I always make the oil change place put 10W-30 oil no matter where I go. I also have it changed every 2500-3000 miles. In fact, if I am home for the weekend from college and it is close to 2500 miles since the last oil change, I get it changed anyway.
It would go to 60 PSI on startup, 45-50 during cruise at 65 MPH and down to 30-40 (sometimes 25) on idle at operating temp. At the last oil change 700 miles ago, I had them put Lucas Oil stabilizer in it. I noticed my cruise and idle oil pressures go up by 10 PSI. They also said there was alot of moisture on the pan and that the oil pan gasket must be leaking. I parked it on my mom's new garage floor and she was pissed when I pulled it out and my front tires lifted the paint and there were 2 drops of oil on the fresh paint!!!
With 5W-30, it would go down to 20 on idle when it is hot, so I always tell them to put in 10W-30 and if they put up an arguement (like when I had the coolant flushed they argued with me about putting the green stuff in. They put Dexcool in anyway. Never went back there.) I tell them to move the car out of the bay and that I am leaving.
It would go to 60 PSI on startup, 45-50 during cruise at 65 MPH and down to 30-40 (sometimes 25) on idle at operating temp. At the last oil change 700 miles ago, I had them put Lucas Oil stabilizer in it. I noticed my cruise and idle oil pressures go up by 10 PSI. They also said there was alot of moisture on the pan and that the oil pan gasket must be leaking. I parked it on my mom's new garage floor and she was pissed when I pulled it out and my front tires lifted the paint and there were 2 drops of oil on the fresh paint!!!
With 5W-30, it would go down to 20 on idle when it is hot, so I always tell them to put in 10W-30 and if they put up an arguement (like when I had the coolant flushed they argued with me about putting the green stuff in. They put Dexcool in anyway. Never went back there.) I tell them to move the car out of the bay and that I am leaving.
#35
02-09-2018, 04:44 AM
I use 5w30 synthetic blend, whichever brand is on sale, and Wix filters (the bigger one for 4x4).
#37
02-09-2018, 07:56 PM
Mobil 1, 5W-30 High Mileage synthetic (135k miles on motor)
Wix filter
47 psi when cold (43'F) at idle
27 psi when hot (189'F) at idle
Wix filter
47 psi when cold (43'F) at idle
27 psi when hot (189'F) at idle
Last edited by christine_208; 02-10-2018 at 11:12 AM.
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