What kind of oil should I use / what is the "best" oil?
- Bil Brown
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Re: Dino vs synthetic oil question
Hey you oil experts.....I`ve got a case of Castrol R bean oil left over from my 4cam daze......is there a shelf life?
Bill Brown
- David Jones
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Re: Dino vs synthetic oil question
Just use it in the lawnmower. It will make mowing a pleasure
If I had known I would live this long I would have pushed the envelope a little harder.
Cymru am byth
David Jones #9715
Cymru am byth
David Jones #9715
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Re: Dino vs synthetic oil question
How about Joe Gibbs Driven Racing DT-50 15W50 synthetic oil. For air cooled engines !! Am putting in my 1971 911S this week. Check out their website.
George Kehler II
1955 Coupe
1971 911 S
1997 993 Targa
1955 Coupe
1971 911 S
1997 993 Targa
- Bill Lawless
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Re: Dino vs synthetic oil question
Nice, this is one of my favorites in VT... (Opps, how did oil discussion turn into beer discussion) https://hillfarmstead.com/awards/hill-f ... -for-2018/
Thanks,
Bill
65' 356 SC Cab Irish Green
82' SC Targa
81 VW Westfalia with 2015 Forester Engine
BMW 64'-R50/2, 75'-BMW R90/6, 74' BMW R90/6, Yamaha BW350
Bill
65' 356 SC Cab Irish Green
82' SC Targa
81 VW Westfalia with 2015 Forester Engine
BMW 64'-R50/2, 75'-BMW R90/6, 74' BMW R90/6, Yamaha BW350
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Re: Dino vs synthetic oil question
FWIW I use Rotella T4 15w40 in all my pre-1990 cars now. Good oil, cheap to buy and 1200+- ppm of ZDDP.
https://rotella.shell.com/en_us/product ... ction.html
https://rotella.shell.com/en_us/product ... ction.html
1962 Twin Grille Roadster
2017 718 Cayman
Others too
2017 718 Cayman
Others too
- Bill Lawless
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Re: Dino vs synthetic oil question
Is there any advantage to running a diesel oil?Stephen Ross wrote: ↑Sun Jan 19, 2020 8:40 am FWIW I use Rotella T4 15w40 in all my pre-1990 cars now. Good oil, cheap to buy and 1200+- ppm of ZDDP.
https://rotella.shell.com/en_us/product ... ction.html
Thanks,
Bill
65' 356 SC Cab Irish Green
82' SC Targa
81 VW Westfalia with 2015 Forester Engine
BMW 64'-R50/2, 75'-BMW R90/6, 74' BMW R90/6, Yamaha BW350
Bill
65' 356 SC Cab Irish Green
82' SC Targa
81 VW Westfalia with 2015 Forester Engine
BMW 64'-R50/2, 75'-BMW R90/6, 74' BMW R90/6, Yamaha BW350
- David Jones
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Re: What kind of oil should I use / what is the "best" oil?
Yes, but mainly because the amount of ZDDP is not restricted as it is for the lower viscosity oils for gasoline engines. Diesel engine lubrication oils are formulated for higher operating temps and greater pressures.
If I had known I would live this long I would have pushed the envelope a little harder.
Cymru am byth
David Jones #9715
Cymru am byth
David Jones #9715
- Martin Benade
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Re: What kind of oil should I use / what is the "best" oil?
There is no downside to diesel levels of ZDDP?
Cleveland Ohio
62 Cabriolet
56 VW
02 IS 300
04 Sienna
62 Cabriolet
56 VW
02 IS 300
04 Sienna
- David Jones
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Re: What kind of oil should I use / what is the "best" oil?
Not sure what the question is Martin, but diesel oils were exempt from the restrictions on zddp levels because they were mandated for oils below 40 weight as they were considered bad for cat converters. I think the max is 800 rpm. Check the Mobil 1 chart.
If I had known I would live this long I would have pushed the envelope a little harder.
Cymru am byth
David Jones #9715
Cymru am byth
David Jones #9715
- Martin Benade
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Re: What kind of oil should I use / what is the "best" oil?
To rephrase, is too much ZDDP a problem for a 356, or is the 1700ish ppm OK?
Cleveland Ohio
62 Cabriolet
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02 IS 300
04 Sienna
62 Cabriolet
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02 IS 300
04 Sienna
- David Jones
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Re: What kind of oil should I use / what is the "best" oil?
OK Martin, now I understand. My reading and experience leads me to believe that around 2000 ppm would be getting to the point where the ZDDP could cause more problems than it solves. Too much causes the oil to tend towards an acidic concentration which is going to corrode some engine components. I doubt many of the manufacturers put that much in so the safe limit is probably around 2000 ppm. It would appear that only the motorcycle and flat out racing oils have over 1700 ppm. Personally I think I will avoid any more than a max of 1500 ppm and a minimum of 1200, then even if the formulation is off by 10% I still have a safety margin. For now I like the Mobil 1 at 1300 ppm which is a good median level. Even If I generate condensation in the engine there is not so much ZDDP that I will generate an acidic concentration.
If I had known I would live this long I would have pushed the envelope a little harder.
Cymru am byth
David Jones #9715
Cymru am byth
David Jones #9715
- Martin Benade
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Re: What kind of oil should I use / what is the "best" oil?
Thank you. Sounds like a more informed choice than I could make myself.
Cleveland Ohio
62 Cabriolet
56 VW
02 IS 300
04 Sienna
62 Cabriolet
56 VW
02 IS 300
04 Sienna
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Re: What kind of oil should I use / what is the "best" oil?
...if you rebuilt the VW air, fuel, and oil cooled engines, or our 616s, you as well know the differences in the modern water cooled, more thermally stable, and "way" tighter clearances, demanded to attain the somewhat unrealistic CAFE numbers required by beauracrats in DC offices with no windows.
The reality that our 616, and T4, as well as the more temp stable dry sump 911 engines, simply need higher viscosity oils, to protect the engine life, and ever increasing costly engine parts. These engines are only at nominal performance, when at "normal" operating temps.
Heed Al's, and others, when they suggest more and shorter oil change intervals, when only running the stock by-pass filters, on 616s. In my 1,000 mile since overhaul S90 engine, I added the Pre-mat full flow, and retained the by-pass filter too, for the extra qt. of capacity.
Don't go to sleep on this oil issue, as it is a moving target. Continue to do your "due diligence"...
(I've already done 2 break in oil, changes, new cast iron P/C, little iron fuzz on magnet, little consumption). I read everything David writes, but don't run synthetics.
The reality that our 616, and T4, as well as the more temp stable dry sump 911 engines, simply need higher viscosity oils, to protect the engine life, and ever increasing costly engine parts. These engines are only at nominal performance, when at "normal" operating temps.
Heed Al's, and others, when they suggest more and shorter oil change intervals, when only running the stock by-pass filters, on 616s. In my 1,000 mile since overhaul S90 engine, I added the Pre-mat full flow, and retained the by-pass filter too, for the extra qt. of capacity.
Don't go to sleep on this oil issue, as it is a moving target. Continue to do your "due diligence"...
(I've already done 2 break in oil, changes, new cast iron P/C, little iron fuzz on magnet, little consumption). I read everything David writes, but don't run synthetics.
Mike
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Re: What kind of oil should I use / what is the "best" oil?
down to my last bottle of Pliny in the beer fridge. I wish that we could get Hill Farmstead in NC. This could be a separate thread....
- Paul Lima
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Re: What kind of oil should I use / what is the "best" oil?
My understanding is that the detergents used in modern oils (which do a pretty good job of keeping down deposits on the internals of our engines) are always in a battle with ZDDP; one wants to deposit, the other to remove deposits. Thus, getting the right balance between the two is a job for a very sophisticated chemist. My solution is to stick with an oil with a very good reputation (Swepco in my case, but there are several others)