Kui vana masin on kümme aastat mineraaliga sõitnud ja sa siis sinna sisse mootorit pesevat sünti valad, siis see lööb mootoril pasa lahti. Loogiline on siis see, et igasugu paska sealt välja tuleb.
http://www.redlineoil.com/tech_faq.asp
Can I break-in my engine on Red Line Oil?
We recommend using petroleum 10w30 motor oil on break in to ensure proper piston ring seating. If you allow 1500 to 2000 miles in a street engine or 20 to 30 minutes on the dyno at low rpm, the rings will have had sufficient time to seat and the high initial break-in wear will have occurred.
Should I flush my engine or driveline before using Red Line™s synthetic lubricants?
A flush isn't necessary or advised, as Red Line™s products are compatible and will mix with other synthetics and petroleum products.
http://www.amsoil.com/frequent.aspx
Switching From Petroleum to Synthetic
I heard that new cars require a break in period with petroleum before you switch them to synthetic.
Answer: AMSOIL Synthetic Motor Oil can be used during break-in trouble free. In fact, vehicles such as Dodge Viper and Chevrolet Corvette come factory filled with synthetic oil.
Since most new vehicles come filled with petroleum oil, it only makes good sense to change to AMSOIL at the first scheduled oil change interval. New engine components generate high levels of wear metals and can contain contaminants from assembly. By allowing the engine to operate with the petroleum oil until the first oil/filter change interval, the wear metals and contaminants are removed prior to installing AMSOIL.
Will synthetic motor oil clean the sludge from my engine and plug the oil filter and passageways?
Answer: Absolutely not. Switching from petroleum oil to AMSOIL in routinely maintained vehicles will not cause clogged oil filters or passageways, regardless of mileage. Sludge, which is caused by poor quality oil and neglected maintenance practices, would have to be present in significant amounts to plug oil filters and passageways. If this excessive amount of sludge is present in an engine, it is just a matter of time before oil filters and passageways clog, regardless of the installation of AMSOIL.
Castrol
• Can I switch between a synthetic and a conventional oil? [100%]
It is a common myth that you cannot go back to a conventional motor oil after using a synthetic. All of Castrol's oils are fully compatible with one another, and there is no cause for concern if you choose to switch from conventional to synthetic or vice versa. Another common myth is that you cannot switch from a conventional oil to a synthetic oil without first flushing your engine. If you currently use conventional oil, you do not have to flush your engine before you switch to Castrol SYNTEC.
http://www.motul.fr/uk/conseils/faq/reponses.html
Can I mix two types of oil of different qualities and brands?
For the same type of oil (e.g., four-stroke engine oils), the mixing of different brands and qualities is possible. However, be careful that you respect the minimum quality level recommended by the manufacturer. Moreover, the quality of the mixture obtained will generally be that of least good product, and will depend upon the exact proportions.
It is not possible to mix oils of different types (four-stroke engine oil, two-stroke engine oil, gearbox oil, automatic transmission oil, brake fluid, etc.).
http://www.valvoline.com/carcare/articl ... 2&scccid=1
Fallacy
It’s bad for my engine to switch between synthetic and conventional motor oil.
Truth
Today’s synthetics are totally compatible with conventional oil, and other leading synthetics. Switch back and forth all you want. Some who live where temperatures plummet well below zero use synthetic in the winter for its protection during cold starts and extreme temperatures and then switch to lower-priced conventional oil for warmer weather.
Fallacy
Synthetics create more sludge.
Truth
Synthetics create less sludge: That’s one reason jet-engine makers liked them 60 years ago. Speculation says that this fallacy was created when people switched a vehicle with a poor oil-change history to synthetic. While synthetic may loosen built-up sludge, a change using conventional oil probably will do something similar with a poorly maintained vehicle. When facing such a situation, change the oil filter after about 750 miles and cut it apart to see if it’s filled with sludge.
http://www.mobiloil.com/USA-English/Mot ... l_Oil.aspx
Question:
Any Problem Having Residual Conventional Oil in the Engine When Switching to Synthetic?
When switching from petroleum-based motor oil to synthetic is there a concern regarding the co-mingling of residual organic-based oil with the new synthetic oil and if so what are the risks?
-- Don Wilson, New Windsor, NY
Answer:
There should be no concerns with switching your motor oil from conventional to Mobil 1 or Mobil 1 Extended Performance. No special preparation is necessary. Mobil 1 is compatible with conventional oils.
Lugesin õlitootjate lehti ja kleepisin siia mõned väljavõtted ja lingid.
Mina järeldaks sellest infost järgnevat.
1. Neljataktiliste mootorite õlisid võib omavahel julgelt vahetada. Isegi segada, kuid segule jäävad pigem kehvema õli omadused.
2. Mineraalõli tasub kasutada kolvirõngaste sissetöötamiseks.
3. Kui mootor on seest väga pasane, siis tuleb ta lahti võtta ja ära puhastada.