Post by
BBISHOPPCM »
https://forums.nicoclub.com/bbishoppcm-u54071.html
Fri Nov 28, 2008 5:50 pm
Having actually switched from dino to synthetic, and back to dino; the type of oil you use has no baring on the valvetrain noise. However, the weight of the oil does. Always use the recommended oil listed in the owners manual for your average operating temperatures. To save the cost of using costly synthetic oil, try using a good quality conventional oil (Castrol GTX is a great oil), as you want a decent amount of Zinc to reduce engine wear on cold startups. Never use anything recommended by a "friend" or "buddy who knows stuff 'bout cars" unless the owners manual suggests it. I only say this because when I was a young naive 17 year old, a friend recommended I use 50w oil in my VW. Long story short, I almost destroyed that engine, as 50w is great if you live in central Florida; but turns to molasses in 0 degree Fahrenheit weather. The 1.8l VW watercooled engines are funky, but not THAT funky. On the other end of the spectrum, another friend told my cousin to run 5w-30 in his VW Jetta (same engine as mine), which is supposed to run on 10w-40. 5w30 was too thin, caused the hydraulic lifters to make a rash of noise, and the oil pressure light kept coming on.