Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - I've done gone synthetic in tranny & engine (3mpg increase)

Christ · 02-07-2010, 03:38 AM

As long as you check your oil frequently for awhile.

Your first synthetic change should be at or near 3k, the rest of them can be longer, if you're comfortable with extended oil changes.

I wish I'd taken a pic, but I ran the same oil/filter in Cara for 10k+ miles and only added 2qts, one to replace the MMO as it burned out, and one at 5k miles. After all that time with 0w30 oil, the engine oil was still clean and honey-colored, not black. I wasn't running an air filter for most of that, either.

02-07-2010, 03:38 AM	#8 (permalink)
Christ Moderate your Moderation. Join Date: Nov 2008 Location: Troy, Pa. Posts: 8,919 Pasta - '96 Volkswagen Passat TDi 90 day: 45.22 mpg (US) Thanks: 1,369 Thanked 430 Times in 353 Posts	As long as you check your oil frequently for awhile. Your first synthetic change should be at or near 3k, the rest of them can be longer, if you're comfortable with extended oil changes. I wish I'd taken a pic, but I ran the same oil/filter in Cara for 10k+ miles and only added 2qts, one to replace the MMO as it burned out, and one at 5k miles. After all that time with 0w30 oil, the engine oil was still clean and honey-colored, not black. I wasn't running an air filter for most of that, either. __________________ "¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"