||11-12-2012 05:47 PM
Synthetic is the way to go!
I switched to Amsoil 5W30 five years ago and am very glad I did. I mainly went to synthetic due to start up rpm (2200) after switching to syn-oil, the rpm dropped to 18-1900. It's common knowledge that 'startup is where the most wear occurs on the engine' and I think piss poor maintenance is 2nd cause of excessive wear. I went w/Amsoil because (1) I'd knew of it 35 years ago-a customer used it in air cooled cast iron engines and it really extended the life of his motors and (2) It was on sale when I was ready to tru it. Turns out that Amsoil, Royal Purple and another popular brand who's name escapes me-are "Ester Based Oils". There may be others, but since I'm happy with what I'm using-I haven't looked farther into it. I'd stay away from 'blends'- Why? There are no standards for the ratio or quality of the synthetic that comes in each container so it may be a teaspoon or up to a tablespoon? I'ts easier to make your own blend, say one quart of quality synthetic with four quarts of conventional (or what's know as dino oil-I believe short for dinosour), that way you know your getting a true 20% blend. You can use 2 qts out of five for a 40% blend. I also use a high quality oil filter and have gotten my used synthetic oil anaylzed twice (two different oil changes) to check for contaminants-chemical or metals. W/O the analysis, you have no idea if there is value in using synthetic, and since you've gone this far-the $20-25 for it is worth it. I also noticed the dino oil getting darker in 1,000 miles. I run the synthetic for 15,000 miles-changing fot a new oil filter at 7,500 miles. There is a guy who bought and opened up different brands of filters and made observations of his findings (with pictures) on the web, I don't remember the site but if you made it this far-you should be able to find it. Remember to check and replace you air filter as needed-not by mileage. Check it with the 'trouble light or hold it up to the sun-remember these filters are not what you want to "get every inch used"-Buy a spare when you find a good price. Good Luck.