What kind of oil should I use / what is the "best" oil?

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neilbardsley
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Re: What kind of oil should I use / what is the "best" oil?

#226 Post by neilbardsley » Sat Sep 18, 2021 5:28 am

In the paddock at the Goodwood revival Motul has a free oil testing service and I chatted to them. They had some interesting things to say.

1). Don't idle your car to warm it up. Get in and drive. The rings aren't sealed/heated properly so petrol is coming past and wearing the oil. I've also, believe, that I've heard Cliff writing about not having a low idle because the CAM is getting enough oil.

2) store your car for longer periods with fresh oil. Someone asked this on here a while ago. He didn't explain that one

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Martin Benade
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Re: What kind of oil should I use / what is the "best" oil?

#227 Post by Martin Benade » Sat Sep 18, 2021 10:08 am

The cam lobes nearly dip into the oil if its full and I hear it’s pretty windy inside a crankcase so at least with stock valve springs personally I wouldn’t worry about idle speed lubrication. Storing with clean oil is good because dirty oil can have acidic stuff in it that can damage the bearings while it’s stored.
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Jorge A. Avila
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Re: What kind of oil should I use / what is the "best" oil?

#228 Post by Jorge A. Avila » Sun Oct 10, 2021 12:03 pm

I suggest getting a full flow air filter from Precision Matters. It will keep the oil cleaner for a longer period and as a bonus, it will make you engine run cooler. Thanks Ron

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Re: What kind of oil should I use / what is the "best" oil?

#229 Post by DaveErickson » Thu Oct 21, 2021 2:52 pm

I need to refill the ZF steering gear after removing, draining it and replacing the seals. Is this the preferred lubricant: MOBIL 1 Synthetic, SAE Grade : 75W-90

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Tom Wavrin
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Re: What kind of oil should I use / what is the "best" oil?

#230 Post by Tom Wavrin » Sat Jan 15, 2022 2:18 am

Check out Pennrite steering box lube. 16 oz. Lithium based and pourable, gel-like consistency. Appropriate for ZF boxes from what I've read. Restoration Supply Co in Escondido used to carry it.1-800-306-7008 Made in Australia.
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Mike Horton
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Re: What kind of oil should I use / what is the "best" oil?

#231 Post by Mike Horton » Sat Jan 15, 2022 11:35 am

Martin Benade wrote:
Sat Sep 18, 2021 10:08 am
The cam lobes nearly dip into the oil if its full and I hear it’s pretty windy inside a crankcase so at least with stock valve springs personally I wouldn’t worry about idle speed lubrication. Storing with clean oil is good because dirty oil can have acidic stuff in it that can damage the bearings while it’s stored.
... and dirty oil will 'sediment, or gravity " fall out, and leave the bad stuff on the case sump floor, and other remote, hard to find places...

Ron's Pre-mat sump screen billet cover, with its re-designed drain plug, actually creates the real low place, for a more complete oil drain, while oil is warm, brilliant !
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Re: What kind of oil should I use / what is the "best" oil?

#232 Post by Mike Horton » Sat Jan 15, 2022 12:37 pm

Jorge A. Avila wrote:
Sun Oct 10, 2021 12:03 pm
I suggest getting a full flow air filter from Precision Matters. It will keep the oil cleaner for a longer period and as a bonus, it will make you engine run cooler. Thanks Ron
... and last longer, as they did in aviation piston engine maintenance, when that industry adopted the full glow filters, in the early 1960s, a period I experienced and worked through professionally, proving these "claims", ... which proved to be true, as it was in the automotive industry, about the same time frame.

This is one of the best upgrades for the 616 engine design, in my opinion, based on experience, history, and tech knowledge, and included one of Ron's Pre-Matt centered kits on my hybrid '62 S90, at overhaul, as I had a big can original Leistritz muffler, for which this unit was designed, his remote, for those who's exhaust systems lack mechanical clearance for the centered unit, and I retained the original by-pass filter, for its finer particulate filtering properties, the extra near qt. of oil capacity, and the by-pass filter can's extra surface area for air flow cooling...

If you care about the benefits of the full flow filters, do your own, independant thought research, as through time, this "science", has been long proven, and leaves an original top side engine appearance.

... just my $.02
Mike

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Mark Roth
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Re: What kind of oil should I use / what is the "best" oil?

#233 Post by Mark Roth » Sun Jan 16, 2022 8:47 am

The discussion of the pros and cons of full flow oil filters is here.
viewtopic.php?f=1&t=47766
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Dennis Vogel
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Re: Dino vs synthetic oil question

#234 Post by Dennis Vogel » Wed Mar 30, 2022 7:55 pm

David Jones wrote:
Sat Jan 18, 2020 11:44 am
Bill, use this chart to make your decision, You can rule out most of their oils based on ZDDP amounts. Choose one with more than 900 ppm. From all my research I would say 1200/1300 ppm is optimum.
I dug up this thread as I don't seem to be able to get PennGrade in NorCal anymore, and Sierra Madre isn't offering it for shipment either.

The link in David's post was no longer working. I think this Has Zinc Been Remove from Motor Oils FAQ topic includes a link to the current product chart including Zinc level.

Based on what's currently offered, and David's comments, it appears the Mobil 1 15W-50 with 1300 PPM Zinc level is the recommended Mobil 1 choice.
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Re: What kind of oil should I use / what is the "best" oil?

#235 Post by Steve Proctor » Thu Mar 31, 2022 12:00 pm

Brad Penn fan and have never run a synthetic in a 356, but now considering the higher zinc Mobil 1 blends that come in higher viscosities. Anyone have an option as to whether they are less likely to leak? I recall that was a common rap on synthetics. Thanks,

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Wes Bender
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Re: What kind of oil should I use / what is the "best" oil?

#236 Post by Wes Bender » Thu Mar 31, 2022 12:39 pm

PennGrade partial synthetic 20W50 is available on Amazon.

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Re: What kind of oil should I use / what is the "best" oil?

#237 Post by David Jones » Thu Mar 31, 2022 1:37 pm

Considering how relatively cheap synthetic is and the basic needs of even a high performance street 356 engine I believe Mobil 1 15/50 is more than adequate. As to the leak concerns that was eventually traced to non compatible additives in the early synthetic oils that caused a reaction in the material of the oil seals. That was addressed and I have not seen oil leaks from seals for a very long time. Paying $90 a gallon for a boutique oil that is unnecessary is a real waste. I think all the major brand 15/50 oils will have around the same amount of ZDDP because that viscosity range is intended mostly for diesel engine vehicles.
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Martin Benade
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Re: What kind of oil should I use / what is the "best" oil?

#238 Post by Martin Benade » Thu Mar 31, 2022 1:52 pm

What is a good break-in oil? I gather Mobil 1 is not recommended.
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Re: What kind of oil should I use / what is the "best" oil?

#239 Post by David Jones » Thu Mar 31, 2022 2:00 pm

I use Shell Rotella 15/40 conventional. It has 1200 ppm of zinc which is enough for our engines. Less than $15 a gallon at Walmart. It is also good enough to use as an everyday oil for most street driven close to stock engines.
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Kevin Wills
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Re: What kind of oil should I use / what is the "best" oil?

#240 Post by Kevin Wills » Thu Mar 31, 2022 3:36 pm

"Driven" is another option for break-in oil. That is what I am going to use on the engine I am wrapping up. Was recommended by LN Engineering that I got P/C's from.

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