which oil to use? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

69sinker · 02-09-2013, 12:03 AM

Just wondering what brand and weight oil to use on my 140000 mile ls pullout.
Posted via Mobile Device

BR3W CITY · 02-09-2013, 02:04 AM

Since its higher miles and you don't know what type of oil its had most its life, I'd probably just run a good high quality dinosaur oil, at least for a little while. With high miles, you'll need to replace some seals or leaks, and there's no reason to put $8qt oil into a high mileage pulout and then leak it all out.

If its a SUPER clean engine and doesn't leak or burn anything, or if you plan on doing a rebuild on it, then for any performance/hobby car, a top quality synthetic is where its at. I've run Royal Purple, Mobil 1, Redline (all 5w20 or 5w30 depending) with good results.

BigDan3131 · 02-13-2013, 03:57 AM

I would think the High Mileage Mobil 1 would be a good choice. I have used it in my 4.3L V6 from about 140K miles to present which it now has over 225K miles and still running strong.

02-09-2013, 12:03 AM	#1
69sinker Registered User Join Date: Nov 2012 Location: eldred,il Posts: 503	which oil to use? Just wondering what brand and weight oil to use on my 140000 mile ls pullout. Posted via Mobile Device __________________ My 69 cst lwb 2wd LS1 swap 5.7/4L60e build http://67-72chevytrucks.com/vboard/s...d.php?t=589869

02-09-2013, 02:04 AM	#2
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: which oil to use? Since its higher miles and you don't know what type of oil its had most its life, I'd probably just run a good high quality dinosaur oil, at least for a little while. With high miles, you'll need to replace some seals or leaks, and there's no reason to put $8qt oil into a high mileage pulout and then leak it all out. If its a SUPER clean engine and doesn't leak or burn anything, or if you plan on doing a rebuild on it, then for any performance/hobby car, a top quality synthetic is where its at. I've run Royal Purple, Mobil 1, Redline (all 5w20 or 5w30 depending) with good results. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

02-13-2013, 03:57 AM	#3
BigDan3131 Registered User Join Date: Jun 2006 Location: Maple Valley, WA Posts: 1,913	Re: which oil to use? I would think the High Mileage Mobil 1 would be a good choice. I have used it in my 4.3L V6 from about 140K miles to present which it now has over 225K miles and still running strong. __________________ Custom Painter/Restoration Specialist 1965 GMC 3/4 Ton LB SOLD? 1964 Chevy El Camino in full restoration 1991 Chevy S10 288K+ miles 2nd Owner SOLD 2020 RAM 1500 Warlock



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