I'm coming up to my next oil change on my 2018 Audi S4. I got the first oil change at 7.5K miles as comes free for the first one. I performed UOA on both the FF and sampled the second one without draining at 4.5k miles.
I'm settling on 7.5K OCI as I feel comfortable with this. Maybe I will extend it out but for now would like to stick with it.
I am currently looking at either sticking with the Castrol LL IV FE that I've been using or possibly switching to Motul or Ligui Moly Top Tech 6200. I have contacted Mobil 1 but it does not appear you can get their ESP 0W20 in the US just yet.
The reason I may want to switch is that I use about a liter of oil for the 7.5k interval. I know that's pretty "standard" now but I have other vehicles that don't use any oil. A person on the Audi Forums claimed they used oil with Castrol but did not use any when they switched to Motul.
I know the motor is still young and breaking in but I guess I'm not too thrilled with the wear numbers. Before someone suggest running something like Mobil 1 0W40 or Castrol in 0W40 I would like to follow the warranty guidelines and use 508 as much as I would love to use something else. This may change in time but for right now want to stick with 508 oil.
I'm leaning with using Motul as someone had a favorable experience with it. It is a little more expensive then the Castrol. Since there are no 508 spec oils on shelves they must be ordered. The Castrol with a filter is roughly $90 for 8 liters. The Motul is around $110. The S4 has a capacity of 7.25 liters (7.7 quarts) with the remaining .75 liters used for "top offs". No idea how much the Liqui Moly would run me.
Last thing I have feeling the TBN number for the FF was out of error. With that said it is a little disconcerting that the TBN was at 3.3 with only 4.5k miles on the oil. I'm thinking 7.5k OCI is ok since I use almost a liter of makeup oil. Any concerns here?
If it were up to you what would you choose and why? Looking forward to your guys opinions!
I'm settling on 7.5K OCI as I feel comfortable with this. Maybe I will extend it out but for now would like to stick with it.
I am currently looking at either sticking with the Castrol LL IV FE that I've been using or possibly switching to Motul or Ligui Moly Top Tech 6200. I have contacted Mobil 1 but it does not appear you can get their ESP 0W20 in the US just yet.
The reason I may want to switch is that I use about a liter of oil for the 7.5k interval. I know that's pretty "standard" now but I have other vehicles that don't use any oil. A person on the Audi Forums claimed they used oil with Castrol but did not use any when they switched to Motul.
I know the motor is still young and breaking in but I guess I'm not too thrilled with the wear numbers. Before someone suggest running something like Mobil 1 0W40 or Castrol in 0W40 I would like to follow the warranty guidelines and use 508 as much as I would love to use something else. This may change in time but for right now want to stick with 508 oil.
I'm leaning with using Motul as someone had a favorable experience with it. It is a little more expensive then the Castrol. Since there are no 508 spec oils on shelves they must be ordered. The Castrol with a filter is roughly $90 for 8 liters. The Motul is around $110. The S4 has a capacity of 7.25 liters (7.7 quarts) with the remaining .75 liters used for "top offs". No idea how much the Liqui Moly would run me.
Last thing I have feeling the TBN number for the FF was out of error. With that said it is a little disconcerting that the TBN was at 3.3 with only 4.5k miles on the oil. I'm thinking 7.5k OCI is ok since I use almost a liter of makeup oil. Any concerns here?
If it were up to you what would you choose and why? Looking forward to your guys opinions!