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Old 03-31-2009, 05:17 PM
law32ps87 law32ps87 is offline
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oil for 87 prostar

I have been using rotella t for the 2 years I have owned the boat, but I remember reading somewhere that they stopped putting in an additive that is needed for the flat tappet cam in my engine. Im not entirely sure if this is true, but what engine oil would be best for my engine? 351 indmar, non powerslot
thanks
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  #2  
Old 03-31-2009, 07:09 PM
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Laurel_Lake_Skier Laurel_Lake_Skier is offline
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If you want to stick to a multi, Valvoline VR1 20W-50 seems to be the current best choice. It has the high level of ZDDP you need for the flat tappet engine. The Rotella still has the ZDDP in the straight 30 and 40 weights as well. For a very complete discussion, check out CorrectCraftFan.com and do a search for either the VR1, Rotella or ZDDP oil.....lots of tech talk over there.
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Old 04-01-2009, 12:45 PM
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east tx skier east tx skier is offline
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I'm close to your latitude and run the 20W50 VR1. But given our temperatures in Texas, you'd probably be fine with the straight 40 as well.
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Old 04-01-2009, 01:09 PM
TMCNo1 TMCNo1 is offline
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I've always run Valvoline VR1 40 weight in our '89,
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  #5  
Old 04-01-2009, 01:45 PM
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loeweb loeweb is offline
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Originally Posted by TMCNo1 View Post
I've always run Valvoline VR1 40 weight in our '89,
Attachment 45674
Stupid question but what is the difference between the straight 40wt and the 20w 50 VR1?
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Old 04-01-2009, 02:24 PM
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Originally Posted by loeweb View Post
Stupid question but what is the difference between the straight 40wt and the 20w 50 VR1?
I'm not an oil expert, but the the multiweight oils are going to help you with lubrication at startup. Whether or not you can get away with using straight 40W oil is going to depend on how cold it gets when and where you're operating.
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  #7  
Old 04-01-2009, 02:25 PM
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loeweb loeweb is offline
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Quote:
Originally Posted by east tx skier View Post
I'm not an oil expert, but the the multiweight oils are going to help you with lubrication at startup. Whether or not you can get away with using straight 40W oil is going to depend on how cold it gets when and where you're operating.
Thanks for the clarity. I better use the vr1 20w 50 here in the midwest.
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Old 04-01-2009, 04:32 PM
law32ps87 law32ps87 is offline
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thanks for all the replys. I went ahead an bought some vr1 20w50 at autozone.
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  #9  
Old 10-02-2009, 05:27 PM
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wakesurfer wakesurfer is offline
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Oil for 1995 prostar 190 South Florida Boat

Quote:
Originally Posted by law32ps87 View Post
thanks for all the replys. I went ahead an bought some vr1 20w50 at autozone.
Please tell me what oil is the best to use in this boat with a chevy engine?
thanks for your time, and how many quarts do i need ? 6?
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Old 10-03-2009, 01:37 AM
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Thrall Thrall is offline
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Originally Posted by wakesurfer View Post
Please tell me what oil is the best to use in this boat with a chevy engine?
thanks for your time, and how many quarts do i need ? 6?
5 qts (if you get it all out. I'm alwyas a little shy of 5 qts to get it full even after running the engine for a few seconds).
Any oil suitable for your car will work fine. I've run 10W40 before, but typically stick to 15w40 since I buy it by the case(s) for my diesel pickup anyway.
15W40 is reccomended by Indmar.
I use either Rotella or Delo as that's what's usually on sale.
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