http://www.saabspokane.com/saab_flyer_2.htm
kus väidetakse, et vedelam õli on autotootjate püüe järgida üht tobedat regulatsiooni, millel pole erilist reaalset väärtust ja mis põhjustab mootorite kiiremat hävimist.
How do lighter oils shorten engine life? My 40 years of experience with engines has shown that the engine bearings, (Connecting Rod, and Crankshaft Main Bearings) will bear the brunt of the damage. Engines older than 60K miles old will also wear out camchains, pistons, and valve guides if 7000 -10,000 mile oil changes are adopted to "reduce waste byproducts" of automobiles.
As to engine bearings, even the 10 wt. Multi-grades, (10-30; 10-40 & even 10-50’s), synthetic and non-synthetic, do not cushion the engine bearings sufficiently after 60K. There are wide parameters in the way oils are rated for viscosity and as a Saab Specialist- I have known for 30 years that the 10-weights were not viscous (thick) enough at operating temps. Any farmer knows that straight 30 wt. oil is much heavier than any 10-30, 10-40 and sometimes 10-50’s depending on the operating temperature of the oil.
In California, we used 20-40 oils, and in the northwest- Mobil 1 (15/50) works best. In winter- we mix 10-30 and 15/50 for the proper viscosity.
Neil on seal soe aastaringi ja talvedki suhteliselt leebed.
Kuna järjest rohkem otsustavad masinate hooldustingimuste üle müügimehed mitte insenerid.
Mis meie tingimustes õige oleks?
