Hello Found this today thought maybe someone here would like to read. Randy(20-50 CastrolGTX)H. N.W. Rainforest.
single grade oil is made from a 10wt base stock, and thickeners are added to get 20---30---40 and so on single wt grades plus the additive package. If you look at the molecular structure of single wt oil, it will be round balls, like ping pong or soap bubbles.
A multi-wt oil is made from a 90wt base stock and thinners are added to get down to 10w30----10w40 ect plus the additive package. Structure on these oils look like noodles or cut rubber bands.
Now when shit happins, maybe heater hose, radiator, too much load, way too wild burn out on wet spot, who do you love? When that number two rod bearing is hotter than a seventeen year old on prom night, or the pressure on the thrust bearing when the pressure plate slams home on the clutch. How about those super triple doublelock springs trying to wipe the smile off the cams face, not to mention the skirt fighting black death cause the bore is not the proper distance to dance.
Do you want that ping pong bubble to burst? And it will when the deal goes down. Tim to look for parts and bucks.
OK, same thing with a multi-wt oil, only those noodles and rubber bands will stand way more pressure and stay in a smaller space to still have a film between surfaces. When the heat overcomes the whole shebang and things start to boil off , the oil will be down to its base. Single grades will try to go back to 10wt and multi-wt will try to go to 90wt. No brainer on the one with the best protection.
Extreem, yes, but that is the rap. Series three API service,CI-4,CH-4,CF-4,CF/SL,SJ IS THE STUFF. Like URSA SUPER PLUS 15W40 (CHEVRON TEXACO) , SHELL ROTELLA 15W40 or any other brand that has same API. Pick a brand and stay with it.
Old or new, lotsa miles or new rebuild, this is the best. A side note, it will turn dark, because it is holding all by products and crud in suspension so the filter can do its job. This keeps metal parts clean and will free rings in used and old engines that have sat for a time. Worn valve guides and other parts are just that ,,worn. I have had some old engines dry up after 800 to 1200 miles do to ring seal improving with this oil. If you are happy with what you are now using , stay with it.
__________________ ___________________________________________________ Try the New Netscape Mail Today! Virtually Spam-Free | More Storage | Import Your Contact List http://mail.netscape.com
