Dont Buy Into It!!!
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Dont Buy Into It!!! Well guys, forever I fell along with the "heavier is better within limits" craze with oil for LS1's. NO MORE! I put Castrol Syntec 10-40 (CST 13.2@100*C) in my car tonight. The lifters sound like ****! It is 5x as loud as 10-30 Syntec. I have driven it 8 miles cringing every foot. RPMS did not go over 1500. I am going to limp it back home tomorrow and put what GM told me to put in the damn thing in the owners manual. I dont know what the rest of you experienced, but heavy oils do NOT BELONG IN THIS CAR!
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All I know is im worried sick this heavy *** **** ruined somethign the way it taps. I can hear every lifter in it slapping around. (yes it was warmed up and this is not piston slap). Makes me SICK and I just hope I dont damage anything. 5-30 goes in it tomorrow, per GM recommendation. I learned that if you f*ck with what the factory gave you, yer asking for it. I went out on a limb this time and it damn sure broke off with me on it 
*worried*
*worried*
Originally Posted by BLKWS.6
All I know is im worried sick this heavy *** **** ruined somethign the way it taps. I can hear every lifter in it slapping around. (yes it was warmed up and this is not piston slap). Makes me SICK and I just hope I dont damage anything. 5-30 goes in it tomorrow, per GM recommendation. I learned that if you f*ck with what the factory gave you, yer asking for it. I went out on a limb this time and it damn sure broke off with me on it *worried*
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http://www.mobil.com/USA-English/Lub...erformance.asp
^im going with 5-30 M1 for my next change. I HOPE TO GOD! my car sounds like it used to before the damn molassas I put in it.
^im going with 5-30 M1 for my next change. I HOPE TO GOD! my car sounds like it used to before the damn molassas I put in it.
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Originally Posted by mvvette97
don't worry man. There must be something else. I use RP 10-40 in my C5 and Valvoline 10-40 in my WS6. There is no way that the oil done anything to it. Pull your valve covers and see if you bent some pushrods or maybe broke some springs. I use 10-40 in every car I have. Let us know what you find but I would say it's pushrods or springs and not the oil
Well Ill be damned if my pushrods bent themselves while I was changing the oil and the valvesprings snapped when I cranked it afterwards. Hell no. this is a product of the oil, its a lifter noise. Not a pushrod/spring noise. Maybe all 16 of them bent JUST THE SAME so that they all sound the same, huh? Seriously, that oil f*cked me.
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I don't believe it. I have never heard in my life as a mechanic of a 10-40 oil ever doing anything to an engine. What does your oil pressure run? Maybe you have a **** oil filter.
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Originally Posted by mvvette97
I don't believe it. I have never heard in my life as a mechanic of a 10-40 oil ever doing anything to an engine. What does your oil pressure run? Maybe you have a **** oil filter.
I have a WIX black filter and oil pressure is 45 idle and 55 at 1500rpm cruising.
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Belive what you want, I will put 5-30 M1 full synthetic (11.0 CST @ 100*C) in tomorrow. My friend runs it in her car and hers is quiet as all getout. Will let you all know tomorrow after I change oil, but my car sounded okay before this oil change ****, im talking I shut it off and it was ok and I cranked it and it sounded like *** after a few minutes.
well that tells you that the oil is circulating just fine. If the oil was way too thick it wouls be slow at gaining oil pressure. When you start it does it get pressure fast or slow? Also are you running a stock cam?
Originally Posted by BLKWS.6
Well Ill be damned if my pushrods bent themselves while I was changing the oil and the valvesprings snapped when I cranked it afterwards. Hell no. this is a product of the oil, its a lifter noise. Not a pushrod/spring noise. Maybe all 16 of them bent JUST THE SAME so that they all sound the same, huh? Seriously, that oil f*cked me.
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Originally Posted by mvvette97
well that tells you that the oil is circulating just fine. If the oil was way too thick it wouls be slow at gaining oil pressure. When you start it does it get pressure fast or slow? Also are you running a stock cam?
100% bone stock and pressure builds pretty fast. I do not notice a difference except it has MORE pressure than before, but not a lot (it does nip 60psi on 1700ish rpm shifts). This **** is just too thick. I had this happen once before on a crown vic we put a 5.4L motor in that had very low miles. 15-40 Rotella created a lotta lifter noise. 10-30 fixed it.
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Ok, what changed guys, same brand/part number filter, car was the same before I put it in as a half hour later when I finished...HEAVIER OIL. It sounds like *** and the lifters are very noisy. 5-30 factory recommended M1 is going in. And M1 is NOT as thin as all you say, their 5-30 is thicker than Castrols 10-30 and = to valvolines 10-30 and thicker than their 5-30. I think the M1 should fix this issue.
well if it is as loud as you say then you need to pull the valve covers to see what happened. Oil is not going to fix it.It doesn't take half an hour to check. Oh, you aren't hearing the lifters themselves, you are hearing the slap between the rockers and the valve stems. Lifters don't make the noise. It may be caused from the lifters but the noise is coming from the top.
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Originally Posted by mvvette97
well if it is as loud as you say then you need to pull the valve covers to see what happened. Oil is not going to fix it.It doesn't take half an hour to check. Oh, you aren't hearing the lifters themselves, you are hearing the slap between the rockers and the valve stems. Lifters don't make the noise. It may be caused from the lifters but the noise is coming from the top.
You put any oil in the filter before you screwed it on? Did you leave the oil pan to drain for an extended period of time? Only thing i can think of is maybe the oil pump lost its prime and took a few seconds to start pumping meanwhile something rubbed up against something it shouldnt have cause no oil?
Id bet dollars to donuts the oil change will not get rid of that sound.
Id bet dollars to donuts the oil change will not get rid of that sound.
Unless you put something as absolutely shitty as quaker state in your engine, I doubt that you will experience an lsx related engine failure because of wrong oil. Most modern oils are more than up to the task of taking care of anything less than full-on race motors. Pennnzoil, havoline, mobil1, castrol, etc., should all be capable of protecting your engine.