Increased engine wear. HTHS for regular 5w30 does not meet the minimum required for 502.00This horse may have been beaten here before, but this is my first Euro car. Is there anything wrong with running a good 5w30? Im mostly running around the suburbs with some 30 min trips on the interstate mixed in.
I do not go further than 5k on any VWAG car because I feel that cleaner oil is better for timing chain longevity. I would use a 502/505 or 504/507 oil if making a purchase because they are no more expensive compared to a syn 5W-30.Ok, good info. I was under the impression that the Euro oils were all made to hit the 10k OCI with no sweat with severe conditions. OTOH, some API syns may or may not be a great choice for 10k OCIs in severe conditions. I have a decent amount of 5w30 syns on hand, so I was just going to use them and do 5k. I did one oil change already with QS Euro 5w40. So just stick with that and roll with 10k?
Extended drain capability is not the only reason for the Euro specs. The specs have additional requirements for wear and deposit control. So, whether you run a 3K OCI or a 10K OCI, those two attributes still matter.Ok, good info. I was under the impression that the Euro oils were all made to hit the 10k OCI with no sweat with severe conditions. OTOH, some API syns may or may not be a great choice for 10k OCIs in severe conditions. I have a decent amount of 5w30 syns on hand, so I was just going to use them and do 5k. I did one oil change already with QS Euro 5w40. So just stick with that and roll with 10k?
Ok, so now were getting to the nuts and bolts. So youre saying that in order to get the Euro manufacturers' approval, the oils are just flat out better due to stringency vs API approvals?Extended drain capability is not the only reason for the Euro specs. The specs have additional requirements for wear and deposit control. So, whether you run a 3K OCI or a 10K OCI, those two attributes still matter.
This tool wasn't intended to be used for comparing specs, but here's an idea.Ok, so now were getting to the nuts and bolts. So youre saying that in order to get the Euro manufacturers' approval, the oils are just flat out better due to stringency vs API approvals?
Thanks everyone for helping me understand this Euro stuff better.
Particulates cause wear, as does fuel dilution. Higher viscosity can be helpful in both situations.What difference would the [viscosity] have on whether you can do 3K or 10K oil changes? Is that among the approved choices in the manual? If not, it's probably ok short term, but not recommended for 100,000 miles.
The VW 2.5 is not a highly stressed engine....I can't see using 5w30 syn @ 5k intervals being a problem...but as other have said...VW approved oils are cheap at WM so why bother.
PS: Toyota's, Honda's, Ford's etc..will run neary forever on synthetic oil changes at 5K....why wouldn't a non-turbo, under stressed VW?