misfire

yahmon

Veteran Member
Joined
Dec 27, 2012
Location
canada
TDI
04 passat tdi 6spd stage2 webasto TC3 , 04 passatW8 6 spd, 10 Jetta TDI 6spd stage 1
5W-30 has a lower film strength than 5W-40 and thus causes a flat tappet cam wear faster. Even the older VE engines had cam wear issues on 5W-30 and the narrow PD lobes just make it even worse.

Bottom line is you can run what you like in your car but 5W-30 has killed a lot of PD cams. Even your owner's manual states to use 5W-40 if possible.
That 5w30 has less film strength than 5w40 is a widely believed conception that is false. I had to learn this the hard way years ago .
 

yahmon

Veteran Member
Joined
Dec 27, 2012
Location
canada
TDI
04 passat tdi 6spd stage2 webasto TC3 , 04 passatW8 6 spd, 10 Jetta TDI 6spd stage 1
Crap, was gonna test the oil at 20,000 miles but mechanic had thrown it out.
 

thundershorts

Top Post Dawg
Joined
Jul 15, 2010
Location
west chester pa
TDI
2015 passat tdi sel premium 2015 golf s tdi gls tdi b5.5, 2002 eurovan,Peugeot 505 td,Citroen cx25 prestige
Dunno why any mechanic would dispose of perfectly good 20,000 mile oil....
 

yahmon

Veteran Member
Joined
Dec 27, 2012
Location
canada
TDI
04 passat tdi 6spd stage2 webasto TC3 , 04 passatW8 6 spd, 10 Jetta TDI 6spd stage 1
last oil change at 40000 k (25000 MI), it seems to like it.
Just reading that MANN wants delvac synthetic 5w30 in my V12 24liter diesel and change it at 1000 hours. Gee all this low viscosity with long drain intervals?!?
 
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