Don't care what gets dumped into conventional oil, generally speaking it will make it better. Sometimes a lot, sometimes a little. When you start adding to synthetics you are playing with fire. This statement is loaded.... Depending on what synthetic oil and what additive, most go backwards big time and loose protection, test lab results. The ones that don't go backwards have little gain in protection. The good news is that it feeds the economy and keeps people working.
First oil change on my V8 using Pennzoil Platinum 5W-30 full synthetic
- Thread starter don-ohio
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Don't care what gets dumped into conventional oil, generally speaking it will make it better. Sometimes a lot, sometimes a little. When you start adding to synthetics you are playing with fire. This statement is loaded.... Depending on what synthetic oil and what additive, most go backwards big time and loose protection, test lab results. The ones that don't go backwards have little gain in protection. The good news is that it feeds the economy and keeps people working.
Kinda reminds me of one of my inlaws... He buys a new car and never changes the oil, I mean until the filter starts leaking. It has worked for him for years. His motto is that during the life of the car you waste time and money changing your oil. By the time you change the oil every 3k and add in your time wasted you can buy an engine if/when the time comes. He will top off though with the cheapest crap he can buy at the gas station. The way he tells it he is very convincing....
Yeah,used to be if you got 200K in the 60s,it was a big deal. I did just that with a 170 cid Ford Falcon Futura that got 235,000 miles and still didn't burn over a qt. of oil per 3K change.Drove it every day for a while to Columbus and back(170 miles round trip).May have been the best,most dependable car I ever owned.
Before synthetic,I would only run Marathon straight 30W V.E.P. oil and a can of STP.
But you can't argue with oil like full synthetic which came along and kept a lot of overheated engines from being ruined because of superior heat resistance.
don-ohio
^)
Before synthetic,I would only run Marathon straight 30W V.E.P. oil and a can of STP.
But you can't argue with oil like full synthetic which came along and kept a lot of overheated engines from being ruined because of superior heat resistance.
don-ohio
^)
MysticMac
Well-Known LVC Member
I am running the exact same oil but 5-20 like you supposed too.
(the 0 was for another vehicle)
(the 0 was for another vehicle)
joegr
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Actually, 0W20 meets the requirements for 5W20, and can be used instead of it.
Good luck with using 0W20 in a ford that was design for 5. GM put out a bulletin that said it was OK in select vehicles, 0w20... 2015 and up GM use 0w20 in all models including light trucks. Dexos licensed of course...
Telco
Dedicated LVC Member
0W20 vs 5W20 is not going to matter that much. In fact, many folks run 5W in the summer and 0W in the winter because the 0W will flow a bit better at low temps. Slapping straight 40W into a car that needs 5W20 would be a problem, because the bearings are specced for a thinner oil and the thicker oil simply won't get in between the bearings properly until the bearings wear down enough that the oil molecules can slide in. Sure, some will get in there but not enough will make it in. On top of this, the thicker oil being pumped by an oil pump through an engine designed for lighter oil will build too much pressure. In fact, this is a used car dealer trick to increase oil pressure on a car with a worn engine. They put really thick oil in, and the oil pressure comes up. Lasts until the owner changes the oil.
RigsLS
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Scott, refresh my memory here please, where and when? what happened? Did I get into it over a wax product, seems so not like me
Can you point me in the right direction so I can have a look, see what the fuss was all about.
MysticMac
Well-Known LVC Member
can you mix 5W20 with 0W20?
I think that gives 2.5W/20. As long as it's mixed in equal proportions...
Seriously, that would be just fine. You'll dilute the 0W and enhance the 5W...
RigsLS
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Does a bear sh*t in the woods?
Of course you can, I just did it last night, had some left over Mobil1 5W20, after I changed the oil on the 04 LSE with 4.4L of Mobil1 0W20 I was short the remainder up to 6.6L ... I just added what I had left over from the 5W20 jug. Saved me from buying two 0W20 jugs or one with additional 1L jugs.
Not a huge deal really, gotta use up some left overs some times.
0W~ runs nice in the winter vs. 5W~ runs best in the summers, is how I like to think of it.
joegr
Dedicated LVC Member
Yes, no problems.