While growing up and watching my dad do oil changes I remember one thing: all he used was PYB 20w50 and that was it. PYB for the cars and Genuine H-D oil for his Harley-Davidsons. Is there any validity to the stick with one type of oil or is it irrevelivent?
Switch up oil brands or stick to just one...
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There will probably be a lot of responses, from "buy whatever's on sale" to "only use xxx oil".
IMO it depends on your plan. If you are going to set a conservative interval, then whatever major brand oil that's least expensive would work just fine.
However if you plan to extend your OCI beyond 6 or 7 thousand miles, then staying with the same oil to validate any UOAs you do for that oil is a good plan.
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Remember back in the day some folks would use a brand and just never considered anything else. They believed in it and would maintain stash of it. By sticking with one, you always know what you have. No residue left from something else because the last fill residue would be the same oil.
My 1994 LS400 has more than 340k miles now, the engine is running good without any problem. It never had the same oil brand for more than 2 OCI's, and it have dino then syn then dino ... depends on what I had in my stash at that time.
It consumed 1/2 quarts every 3-4k miles when new and still the same amount now.
It consumed 1/2 quarts every 3-4k miles when new and still the same amount now.
Doesnt matter.
Unless your using Redline
Unless your using Redline
My opinion is that provided you don't tell the car... you can put whatever you want to in it. LOL...
Way back when, before the API and Ilsac standards were well established throughout the industry, brand loyalty wasn't a terrible idea. My Dad was a Valvoline enthusiast.... Later in life he started to waver from that.
This website, and PQI's site particularly can tell you what you need to know about getting the oil your car needs.
If the oil you put in the car meets the standards the car needs.. I don't think you can go wrong.
Then again, there's the performance enthusiasts who break out the fancy equipment and measure an extra 1-3HP at the wheels with the super duper performance oil...
Way back when, before the API and Ilsac standards were well established throughout the industry, brand loyalty wasn't a terrible idea. My Dad was a Valvoline enthusiast.... Later in life he started to waver from that.
This website, and PQI's site particularly can tell you what you need to know about getting the oil your car needs.
If the oil you put in the car meets the standards the car needs.. I don't think you can go wrong.
Then again, there's the performance enthusiasts who break out the fancy equipment and measure an extra 1-3HP at the wheels with the super duper performance oil...
I have been exclusively PU for a few years on my 2006 Ody EX-L (A 5w-20 spec). I had a stash that lasted a few years.
But now that PU is not available in my area, I went ahead and changed oil with 2 Qts Napa Syn 0w-20 SN + 3 Qts Valvoline Synpower 5w-30 SM (Left over). Going pretty strong and already 1K into it and no noticeable difference in drive, feel, etc. I plan to do a 4K OCI on this above simply because the left over 5w-30 was a 4 year old stock that was unsealed but tightly capped jug that was opened a year back; and I might have over extended on the previous PU run as the car went through quite a bit of severe service and I didn't cut down the OCI. A short OCI with mostly freeway runs will get any build ups cleaned up.
Based on the first impressions of the switch, I think I MAY be a convert from Brand Exclusivity to "buy whatever quality spec synthetic that is cheap". In fact given the current Napa and WM pricing, I have stocked up on few different oils good for a couple of years worth of oil changes between 2 cars. Will see how that goes and then decide on whether I want to switch back to brand exclusivity for a specific formulation or not.
But now that PU is not available in my area, I went ahead and changed oil with 2 Qts Napa Syn 0w-20 SN + 3 Qts Valvoline Synpower 5w-30 SM (Left over). Going pretty strong and already 1K into it and no noticeable difference in drive, feel, etc. I plan to do a 4K OCI on this above simply because the left over 5w-30 was a 4 year old stock that was unsealed but tightly capped jug that was opened a year back; and I might have over extended on the previous PU run as the car went through quite a bit of severe service and I didn't cut down the OCI. A short OCI with mostly freeway runs will get any build ups cleaned up.
Based on the first impressions of the switch, I think I MAY be a convert from Brand Exclusivity to "buy whatever quality spec synthetic that is cheap". In fact given the current Napa and WM pricing, I have stocked up on few different oils good for a couple of years worth of oil changes between 2 cars. Will see how that goes and then decide on whether I want to switch back to brand exclusivity for a specific formulation or not.
Sticking with an oil is easy if you only buy the best one for your budget.
Over the past 4 decades I've come full circle, from sticking to one brand, changing brands, and now back to one brand. Well almost, one car still gets whatever I can find the cheapest. Honestly I doubt it matters but..............
Using more than a one brand of oil is likely to cause your engine to fall out.
I've switched up oils just about every OCI.
I think sticking with one oil may be marginally better. But, switching may not hurt anything in your app...
If you are doing UOA's on a regular basis, sticking with one oil that works well is a good idea as far as well metals are concerned. I have seen spikes in wear metals when switching from brand to brand. These wear metals tent to come down when using that oil for a few OCI's.
If you are doing UOA's on a regular basis, sticking with one oil that works well is a good idea as far as well metals are concerned. I have seen spikes in wear metals when switching from brand to brand. These wear metals tent to come down when using that oil for a few OCI's.
Buy the one you like and stick to it.
There is chemically no advantage to changing oils all the time, it is known to be better to stick to one.
When you change chemistries a tribocessive layer is removed and re-applied, and some people notice half quart consumption afterwards, that settles down again.
My personal view is if you like PYB or PP, stick to it and pick it up on sale to be able to afford sticking to it.
There is chemically no advantage to changing oils all the time, it is known to be better to stick to one.
When you change chemistries a tribocessive layer is removed and re-applied, and some people notice half quart consumption afterwards, that settles down again.
My personal view is if you like PYB or PP, stick to it and pick it up on sale to be able to afford sticking to it.
I used to be a big Mobil 1 synthetic user years ago.Since then I've used Kendall synthetic,Royal Purple,Redline,and Amsoil synthetic,so yeah I change brands.
Originally Posted By: Falken
When you change chemistries a tribocessive layer is removed and re-applied,
"tribocessive" isn't even a word......
When you change chemistries a tribocessive layer is removed and re-applied,
"tribocessive" isn't even a word......
What is funny is nowadays when I go see my dad I notice everything from Harley oil to Revtec to Motul brand oil sitting in the garage for his Harley. Guess he isn't brand loyal anymore lol.
It has been said here before that you should switch up gasoline brands once in a while because all brands leave some residue and switching allows cleaning of one brand's residue with the cleaning package from another brand. The same might be true for oil.
Tribocessive. To obsess over Tribology.
Tribocessive.
Tribocessive.
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