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Old May 19, 2021 | 03:58 PM
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Oil weight question

Hello, how’s it goin.
Anyway- I own a 1960 mercury Monterey with a 460 from an 70s~ f250.
The guy who did the rebuild on the engine told me, when I was buying the oil, that straight 40 weight valvoline vr1 oil was A-ok for the engine.
I just wanted to get a second Opinion

SO- is SAE40 ok for it during the summer?
 
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Old May 19, 2021 | 04:11 PM
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Straight 40w would be terrible in winter, the VR1 also isn't fully formulated like API rated oil so deposits and sludge can happen. If you wanted a high zinc oil in a 40w then I would use a single rated ( not dual SN/CK4) diesel 5w40 or 15w40 oil.
 
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Old May 19, 2021 | 04:18 PM
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Originally Posted by ford390gashog
Straight 40w would be terrible in winter, the VR1 also isn't fully formulated like API rated oil so deposits and sludge can happen. If you wanted a high zinc oil in a 40w then I would use a single rated ( not dual SN/CK4) diesel 5w40 or 15w40 oil.
I’ll definitely switch in the winter. But for now am I ok?
 
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Old May 19, 2021 | 04:45 PM
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Concur. I love your car, and the engine choice. I've got an itch to get a two door 64 or later Galaxie, Fairlane, LTD, Courgar, or Thunderbird and put a 460 in it. And a Tremec 6 speed manual.
 
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Old May 19, 2021 | 04:49 PM
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Originally Posted by ranger140892
Concur. I love your car, and the engine choice. I've got an itch to get a two door 64 or later Galaxie, Fairlane, LTD, Courgar, or Thunderbird and put a 460 in it. And a Tremec 6 speed manual.
thanks man, it’s a great ride. So much fun.
And Just to be clear- the 40 weight is ok for now?
Who did you concur with
 
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Old May 19, 2021 | 05:07 PM
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I concur that 40 is fine in the summer. How many ash trays in that car? lol!
 
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Old May 19, 2021 | 05:54 PM
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40w should be fine for summer but I'd run 10-40 or 10-30 year round myself.

If you use the silver bottle VR1 it's fine in street engines it has the proper detergent package. but the NSL ( not street legal ) version does not. I believe it's in a black bottle but I'm not sure. as long as it doesn't say not street legal it's great for older engines.
 
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Old May 19, 2021 | 06:50 PM
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I would use 15w40 diesel motor oil in it.
 
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Old May 19, 2021 | 07:23 PM
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Originally Posted by 440 sixpack
40w should be fine for summer but I'd run 10-40 or 10-30 year round myself.

If you use the silver bottle VR1 it's fine in street engines it has the proper detergent package. but the NSL ( not street legal ) version does not. I believe it's in a black bottle but I'm not sure. as long as it doesn't say not street legal it's great for older engines.


This is the stuff
 
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Old May 19, 2021 | 07:23 PM
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Originally Posted by ranger140892
I concur that 40 is fine in the summer. How many ash trays in that car? lol!
Ive found 2 so far lmao
 
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Old May 19, 2021 | 10:42 PM
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40 isn't a very popular oil I doubt you could find any around here. 10-30 is what I'd run, if you need 40 to get oil pressure your builder didn't do his job.
 
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Old May 19, 2021 | 11:58 PM
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Originally Posted by eire49

This is the stuff


Racing oils do no have the additive package protection for street use DO NOT EVER use racing oils for street use.

Ideally, you want a good 5w-40 Synthetic for these older engines, strait weight oils went out with bias-ply tires there is NO advantage to running them and several disadvantages and is in part why they are no longer specified for ANY road-going engine.

Diesel oils typically have more than adequate ZDDP content to replace/replenish the tribolfilms on wear parts. A couple of good choices are Mobil 1 Turbo Diesel Truck and Rotella T6





 
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Old May 20, 2021 | 01:16 AM
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Oil always seems to be a touchy subject. That and batteries I've noticed.
 
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Old May 20, 2021 | 07:38 AM
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Originally Posted by Doosenberry
Oil always seems to be a touchy subject. That and batteries I've noticed.

It's a touchy subject cause there is a pile of misinformation out there and beliefs that have no actual foundation in reality or fact. Not to mention there is the crowd that can not accept the truth, and that what they believe is not true or has no foundation in reality.
I have a unique insight being a former automotive engineer with Ford and more recently with the lubrication division of a major producer assisting with product testing/development.
And that experience allows me get what would be considered above-average longevity out of my power plants such as below. That example was purchased new and was only retired due to structural corrosion. The engine nor any part of the driveline had been opened up or rebuilt or replaced.
With the right lubrication and maintenance schedule, machinery can be made to last almost indefinitely, if its base engineering and design are sound.



 
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Old May 20, 2021 | 08:31 AM
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VR1 is a racing oil in the sense that it has a high zinc content. it is perfectly fine for street driven engines without a cat convertor.

It's always best to take the manufacturers word rather than clowns on the internet. read the PI sheet. the more you know...

Valvoline™ VR1 Racing Motor Oil : Product Catalog - Valvoline
 
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