Change from semi synthetic to full synthetic oil in a 03' Passat TDI.

Asked by Jun 12, 2013 at 11:23 AM about the 2003 Volkswagen Passat

Question type: Maintenance & Repair

I have been using semi synthetic oil in my 03' Passat 1.9 TDI. Would it be a bad idea to
start using full synthetic oil now after a full engine flush? It is the recommended oil and
offers better protection for my diesel engine but Ive heard that its a bad idea to change
after using semi synthetic in an older engine.

4 Answers

I think you will be just fine. To change that is. For an expert opinion, Google "bobistheoilguy" he knows his stuff and explains things very well


Here's a liunk to the site that David mentioned -- ---- Congratulations David, I see that you are back up on top where you belong. I've been busy with other parts of life to give the Guru site as much attention as I used to.

Hey welcome back TS

And thanks but I don't know that is 'where I belong" but Thanks, really, and welcome back

Your Answer


Looking for a Used Passat in your area?

CarGurus has 24,564 nationwide Passat listings starting at $1,200.


Volkswagen Passat Experts

  • #1
  • #2
    Tom Demyan
  • #3
    Chrisand Edwards
View All

Related Models For Sale

Used Volkswagen Jetta
639 Great Deals out of 36,891 listings starting at $760
Used Honda Accord
1,084 Great Deals out of 65,604 listings starting at $561
Used Toyota Camry
936 Great Deals out of 89,704 listings starting at $300
Used Audi A4
296 Great Deals out of 12,163 listings starting at $1,899
Used BMW 3 Series
1,033 Great Deals out of 33,525 listings starting at $1,000
Used Nissan Altima
1,069 Great Deals out of 78,518 listings starting at $1,500
Used Volkswagen GTI
128 Great Deals out of 6,915 listings starting at $1,700
Used Hyundai Sonata
783 Great Deals out of 54,589 listings starting at $1,500
Used Honda Civic
682 Great Deals out of 63,747 listings starting at $999
Used Volkswagen Golf
104 Great Deals out of 4,147 listings starting at $1,800
Used Volkswagen Touareg
56 Great Deals out of 2,347 listings starting at $3,200
Used BMW 5 Series
480 Great Deals out of 15,629 listings starting at $1,500

Used Cars For Sale

2017 Volkswagen Passat For Sale
22 Great Deals out of 5,849 listings starting at $13,900
2016 Volkswagen Passat For Sale
87 Great Deals out of 1,685 listings starting at $9,900
2015 Volkswagen Passat For Sale
93 Great Deals out of 2,692 listings starting at $7,595
2014 Volkswagen Passat For Sale
111 Great Deals out of 2,310 listings starting at $6,497
2013 Volkswagen Passat For Sale
84 Great Deals out of 2,101 listings starting at $4,900

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.