I know there have been countless debates on this subject. And I've been reading them for all for the past 4 days.
But the problem is they are all old and as you all know, oil quality seems to degrade more and more every year.
So I want to know what people are using in 2019.
I currently use VR 20w50 and I'm about to put some winter oil in it to see if I can get a extra 3-4 weeks of driving. Thinking of 10w30 or 10w40
I have a SBC 383 with a .640 lift solid roller cam.
Sorry for the question I'm just really curious. I'm also curios about how many of you are using 15w40 Diesel oils on SOLID roller cams.
Please be specific. Thanks!!!!
Last edited by LAZR_GUIRA; Oct 23rd, 19 at 05:06 PM.
Reason: forgot to add the year in the tilte
The oils are fine its the quality of cam cores and lifters thats poor. If you have a steel one you may be fine.
No need to run superheavy oils either thats kinda 70s thinking. 10/30 is just fine for more these days
I have been using Mobil 1 Turbo Diesel Truck 5W-40 synthetic motor oil in my 383. Oil pressure is great when cold and hot. I have used it for years in non GM, really high performance turbo (gas)builds and road race track cars. It is pretty cheap at Walmart.,
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Everyone will have their own preference. I just use conventional 10-30. Valvoline
My initial response was for a stock motor build, which is what I have and use conventional 10-30.
Post what your motor/build is because "one size fits all" does not apply to oil type/viscosity. Solid or hydraulic cam and or lifters, wider bearing clearances are examples of different needs. Example, my H/C 383 hydraulic roller HV oil pump in another car uses 20-50 Conventional
I recently switched my solid lifter cars to Amzoil 10w30 Z Rod as it exceeds the zinc level recommended by GM. I don't have any problems to discuss which is a good sign, other than it is on the upper end of the price scale but also I don't get many miles on those vehicles.