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#1 |
![]() Join Date: Mar 2006
Location: Olive Branch,MS
Posts: 291
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My car has been on the lift for about 6 months. I need to change the oil, would it be better to crank it and circulate the oil or drain it as it is?
Something I've never pondered. Thanks ![]() |
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#2 |
![]() ![]() Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,791
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Drain as it is....the oil filter will be empty 👍
And you will get the most old oil removed....... Depending on the oil filter you use, I usually let it sit for a day or two before changing oil to make sure I have an empty oil filter 👍
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Left Clickable links ![]() -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 06-18-2024 at 03:56 PM. |
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#3 |
![]() Join Date: Apr 2023
Location: Houston, TX
Posts: 184
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I would change it on the lift as-is.... whatever oil gravity can send to the pan is already there after this lengthy time. I'd pull the drain plug, and give it plenty time to drain cold. It should drain from pan just fine, given time... maybe a few hours just to get every reasonable drop. This southern summer temperature works in your favor, too.
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#4 |
![]() Join Date: Mar 2006
Location: Olive Branch,MS
Posts: 291
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Thanks Folks, I'll let it drain over night. I'm using a AC Delco PF970C filter.
Been driving my 67, looking forward to getting back in the ZR-1 for a change. ![]() |
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#5 |
![]() Join Date: Jan 2012
Location: Wisconsin
Posts: 887
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![]() Interesting discussion. Conventional wisdom is to have the oil warm/hot to suspend the gunk. But, I wonder if that is really necessary.
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1990 ZR-1 #2180 Red/Black Many of the usual mods for 460HP, tuned by Marc Haibeck ZR-1 Net Registry Member #1548 ![]() |
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#6 | |
![]() ![]() Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,791
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I have no clue how to remove an oil filter full of oil on the LT-5 😜 That is a BIG Advantage of the LT-5 over most any other engine (changing an empty oil filter with no mess) having a vertical and upside down oil filter 👍👍 As long as you give the oil filter time to drain back 👍 Regarding Oil Filter Drain Back issues.........and..... For those of us who fire up the LT-5s (and assume sufficient crank shaft and rod lubrication exists) no matter if they have been stored/sitting for several months...........See Long Sit Before Starting
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Left Clickable links ![]() -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 07-01-2024 at 11:46 PM. |
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#7 |
![]() ![]() Join Date: Aug 2005
Location: Northridge, CA
Posts: 1,456
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I don't want to hijack this thread, but it got me thinking:
I remembered hearing that our oil filters have an "anti-drain back feature." Verified by: http://www.zr1specialist.com/HAT%20W...comparison.htm Yes, this is older (1997/2005) but ... Q1) Do all our ZR-1 oil filters have this feature? Are all oil filters anti-drain back? Or just upside down/vertical? Q2) Anybody add any oil into the filter before installing? What a mess! T
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1995 ZR-1 #106 Blk/ Blk Owned by me since 2000. 93K miles, but not on motor :-) Mods the way I want it, Not afraid to drive it! Last edited by tf95ZR1; 06-23-2024 at 03:40 AM. Reason: Wanted 2 |
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#8 |
![]() Join Date: Mar 2023
Location: PA
Posts: 62
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The correct Blue filter has an anti drain back valve in it. You wont spill any. I always do all my cars cold. I know most use AMSOIL I used Brad Penn or now called Penn Grade. Hibeck told me its good stuff. I used Brad penn in some of my cars and Valvoline RV1 Racing oil in others all have the needed zinc but some Like Amsoil and Brad penn are semi synthetic whereas Valvoline is pure oil with zinc.
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#9 |
Join Date: Oct 2018
Location: Indiana
Posts: 47
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I also use the K&N oil filter because it has a pretty good anti drain valve. K&N oil filters are good. No comment on air filters. Anyone cut open one to see how much oil it is holding? Sounds like a fun project.
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#10 |
![]() ![]() Join Date: Aug 2005
Location: Northridge, CA
Posts: 1,456
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1995 ZR-1 #106 Blk/ Blk Owned by me since 2000. 93K miles, but not on motor :-) Mods the way I want it, Not afraid to drive it! |
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