20w 50 engine oil for older engine?
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Racer
Joined: Jul 2019
Posts: 366
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20w 50 engine oil for older engine?
Had a Mechanic recommend potentially utilizing 20w 50 oil in my 2002 c5 z51 with 160k miles and an oil leak issue. He said using that and maybe Lucas stop leak. I was going to use titan sealer instead of Lucas but was wondering if the 20w 50 would even be necessary if I am using titan? Also if I did use 20w 50, I would of course use synthetic. My other alternative of course being mobile one high mileage 5w-30 synthetic as the manual recommends this. Any and all info much appreciated. Thank you
Last edited by Bstan1009; Dec 20, 2020 at 11:00 PM.
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Agreed. Thicker oil still leaks. I have never been a fan of any stop leak additives either. Where is the leak?
50 weight oil is also pretty thick. The bearing clearances designed for 30 weight are too tight for 50. Its just unnecessary strain on the oil pump.
Fix the leak and use a good high mileage oil.
50 weight oil is also pretty thick. The bearing clearances designed for 30 weight are too tight for 50. Its just unnecessary strain on the oil pump.
Fix the leak and use a good high mileage oil.
Instructor
Joined: Oct 2020
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Had a Mechanic recommend potentially utilizing 20w 50 oil in my 2002 c5 z51 with 160k miles and an oil leak issue. He said using that and maybe Lucas stop leak. I was going to use titan sealer instead of Lucas but was wondering if the 20w 50 would even be necessary if I am using titan? Also if I did use 20w 50, I would of course use synthetic. My other alternative of course being mobile one high mileage 5w-30 synthetic as the manual recommends this. Any and all info much appreciated. Thank you
