Other than saying "it conditions and protects the seals... etc.." please let me know the actual process.
2006-09-22 01:58:45 · 7 answers · asked by Woods Of The World 2 in Cars & Transportation ➔ Maintenance & Repairs
Some high mileage oils are heavier then they're regular brothers (10w-30 regular may be around 10.5 cst, low 30 weight) 10w-30 high mileage may be 12cst, almost a 40 weight....
They have however retained they're additive levels (SL rating)
gf4 oils dropped alot of the zinc, which is very important to have in engines with flat tappet cams....
They also contain more then regular seal conditioners to help with a leak or two you may or may not have..... basically it swells em ever so gently....
2006-09-22 19:09:47 · answer #1 · answered by 572ci. 5 · 0⤊ 1⤋
They put additive packages in the high mileage oils that will get into the valve seals and soften them up so they will swell and not bypass the oil. Valve seals and others after a while get hard and brittle causing failure. The additive will soak into the rubber seals causing them to swell back up. Also every oil viscosity is not exactly what it says. For instance the 10w30 high mileage is at the top end of a 30 weight. It is almost a 10w40. Kind of like rounding up or down in math. When they make the viscosity of oil they get it to a certain point to make either a 30 or 40 weight. for high mileage oils they get the viscosity to a 40 weight and then back off a little to call it a 30 weight. Kind of confusing but I've seen illustrations that explain it better.
2006-09-22 07:19:39 · answer #2 · answered by rwings8215 5 · 0⤊ 0⤋
Synthetic oils have been proven to help reduce the breakdown of moving parts in the cars engine by providing better viscosity, they also provide cooler operating temperatures, which quiets the noise engines usually make. If you are running regular oil or a mix with synthetics, try using full synthetic for better performance. It is initially more expensive, but if it saves your engine or makes it last longer, then the price is worth the effort.
2006-09-22 02:40:05 · answer #3 · answered by GUILLERMO U 2 · 0⤊ 0⤋
Use a "blend" oil using part synthetic and part regular oil. An old car may leak all synthetic. If you have a new car use all synthetic. THe high mileage oils work pretty good but change the filter every change.
2006-09-22 02:00:49 · answer #4 · answered by Anonymous · 0⤊ 0⤋
It is designed to handle the high temps better than regular oil, it takes longer for the synthetics(which are mostly high mileage) to break down. For everything and more that you ever wanted to know about oil see the website below.
Good luck!
2006-09-22 02:33:57 · answer #5 · answered by Redeft 4 · 0⤊ 0⤋
Well "high milage" oil thicker, which helps with leaks and stuff like that. I think that's the main reason for using high milage. I'm not really sure though. I use it just because I'm "supposed to" with as many miles as I have.
2006-09-22 05:52:49 · answer #6 · answered by john a 2 · 0⤊ 0⤋
any vehicle you should change the oil in it at 2500 mile intervals. all youre getting is that saying you just typed. it is no better than regular motor oil.
2006-09-26 00:46:21 · answer #7 · answered by duc602 7 · 0⤊ 0⤋