personally, I think Amsoil AFL is junk. They ruined a stout oil when they reformulated it to mimick 505.01.
Reviews of AMSOIL engine oil
1000 votes
I'm running Amsoil in my 06 GTi and loving it. No trouble with that I can tell, I check dipstick every fillup occasionally have to add some but not a quart, not even .25 of a quart. I've got almost 72k on the clock I did my last oil change around 67500 maybe a little more, and oil is still clean. Car sounds no louder or different from oil dealer had put in it.
i run 5-40 amsoil in my VRT as well
I use Amsoil. While not on the official VW list as an approved oil, it is never the less formulated to the VW spec.
It's a little more pricey but extends change intervals and has worked for me. Keeps engine temps a bit cooler as well.
I am not hating on Amsoil. I am running their engine oil and ****ing hate it. burned off another quarter of a quart in the last day of driving... ive never had this kind of consumption before and there are no leaks...
im actually running that oil right now... I hate it tbh. 3,100 on the oil and it has allowed excess engine noise since day one, SUPER harsh cold starts, and now its burning through faster than the catrol I ran when I first got the car. a WHOLE QUART over 750 miles. the oil is thinner than piss going in, and it just doesnt stand up to what my engine can put out like Shell Rotella T6 has been doing...
Now i am referring to amsoil, Delo 400, mobil one turbo deisel truck oil.
in my Diesels i use amsoil or chevrons delco synthetic for heavy duty diesel engines.
i change at the extended interval and use only 100% synthetic oil usually Amsoil. I plan on using the same in my TDI at the normal service interval unless vw makes a full syn diesel oil
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