0W-08 Engine oil
- Thread starter Al
- Start date
Might not need the PhD, I think performing a few oil analysis would be cheaper and also finding out how this vehicle is going to be operated. If it's a @TiGeo car, than it's gonna see some high speeds and track time would automatically change the oil weight upward.
Originally my K24 called for 0w20, but as we have seen with that motor and the L15 the low tension piston rings and fuel dilution almost cry out for a thicker more robust oil. I believe @Pablo uses 0w30 Amsoil in his Honda. I found out M1 UK had my car at Mobil 3000 5w30 or 0w40 for more rigorous driving. I. took all that into consideration and found a solid product in a 0w30.
Redheaded stepchildren in five quart containers IMHO. As the amount of ethanol is being pushed upward I can only guess these new oils will hold up. If I was stuck using these RemOil like viscosities, I would be looking into only the boutique line of oils as too many of the ones in local stores are commodity based with performance being the least important.
Mobil and anyone else making 0W-8 and 0W-16 are meeting the vehicle manufacture's specs for those viscosities. Engines that spec those oils are incorporating engineering design features to run that thin of oil. Those oils are not meant for any engine not designed to use them (unless some BITOG member want's to go a lot thinner to see how much metal the filter catches, lol) - that's why they have their own special ILSAC designation and API logo on the bottles. As said, going up in viscosity in those engines isn't going to hurt them and give some added protection. I'd be going up a grade if I had a car specing those viscosities.
Last edited:
Mechanical engineering degree (PSU BSME-'69) and 30 years a Maintenance supervisor where I worked with Mobil to spec oil for our newly installed equipment. And yes I know we all here are tribologists. No matter what CAFE standards are you can't run away from the 3 Factor Jornal Bearing Chart. But yes YOU are permitted to do it.
I do UOA for fun, but I have to say I am deeply skeptical that it shows anything of value regarding wear metals. I've seen UOA from BMW forums where the report looked good but the oil had glitter in it and the engine threw a rod a month later. Of course we know it's blind to certain particulate sizes with the methods commonly used.
A Blackstone type ICP spectroscopy UOA can only detect wear particle sizes of 5-7 microns or less. So it's like looking at the world through a straw. You have to meticulously track UOAs of every OCI to even get an indication of wear trends.
Amsoil 0w8 saw it stays the same viscosity as Lucas reel oil but it's lil thinner and I use the 0w 16 mobile one Synthetic oil cause itstays the same as Lucas reel oil thickness Lucas reel oil is 8 centistokes thin oil dye with in it and 0w16 Synthetic mobile one oil is the same lucas oil I've been using this oil for years in all my reels and every one else I clean for
The chosen one.
Ahh yes the old “it will shear off the drive gear” nonsense.
Will this supposed failure happen because one used a -20 grade instead of an 8 grade? Because that’s what’s being discussed here.
What about a -40 grade?
Will cold oil at temps below 0F bust oil pumps during start up too? Or does this phenomenon only happen at operating temps?
Makes total sense. Those 10 additional cSt can really stress the pump out.No , only at operating temps
dnewton3
Staff member
I find that absurd, relative to the lubes and normal applications being discussed.
Oil pumps have a relief valve; that would alleviate your concern.
Last edited:
If a 0W oil can "bust the oil pump" then there should be millions of cars with busted oil pumps. A 0W is going to be thinner at cold start-up than any other higher W grade oil. The hot KV100 viscosity isn't gonna bust anything.
I live so far from civilization, and my daily commute to the park and ride puts over 20,000 miles a year on it.
Longevity is very important. I only want to buy and drive vehicles that can make it to 300,000 miles with minimal repairs.
With 0W-4, I would be lucky if it completed a 150 mile roundtrip commute for 1 day before the engine blew.
Patman
Staff member
Similar threads
