Hello Bitog, I had a quick question about thickening the oil in my 2005 Wrx stg 2 with stock ej205 engine and stock td04 turbo. (yes, I know, we all hate oil questions)
A little of a back story. Before I bought my Wrx I had done a bunch of reading online and noticed a lot of people complaining about thin oils and pretty much everyone saying thicker more robust oils are better. When I bought my Wrx I read in the manual that thicker (than oe 5w30) oils are recommended for hard use. I have always (except the first change) used Mobil 1 0w40 Euro since owning the Wrx (past ~20k miles) and both myself and my Wrx seem to like it better than the 5w30 that was in it. Always changed it every 3K w oe Subaru filter.
Now comes the sort-of question. I am debating on using like half a qt of slightly thicker oil every oil change (along with ~4qts of my regular M1 0w40 euro), or just using my regular M1 0w40 for regular oil changes and using a slightly thicker oil for my frequent top upts instead of topping it off with my usual M1 0w40 euro.
Is this a good idea, even just to try it and see? The engine seems to like the M1 0w40 euro better than the regular M1 5w30, was wondering if it would like up to 1 qt of some a little thicker.
I was thinking maybe Mobil 1 5w50, M1 hm 10w40, M1 tdt 5w40 or maybe something Amsoil has (one of their 5w40 euro, or other 0/5/10 W 40/50) for top offs, or maybe the last half quart of the oil change plus top offs.
Ideas? Suggestions? Recommendations?
A little of a back story. Before I bought my Wrx I had done a bunch of reading online and noticed a lot of people complaining about thin oils and pretty much everyone saying thicker more robust oils are better. When I bought my Wrx I read in the manual that thicker (than oe 5w30) oils are recommended for hard use. I have always (except the first change) used Mobil 1 0w40 Euro since owning the Wrx (past ~20k miles) and both myself and my Wrx seem to like it better than the 5w30 that was in it. Always changed it every 3K w oe Subaru filter.
Now comes the sort-of question. I am debating on using like half a qt of slightly thicker oil every oil change (along with ~4qts of my regular M1 0w40 euro), or just using my regular M1 0w40 for regular oil changes and using a slightly thicker oil for my frequent top upts instead of topping it off with my usual M1 0w40 euro.
Is this a good idea, even just to try it and see? The engine seems to like the M1 0w40 euro better than the regular M1 5w30, was wondering if it would like up to 1 qt of some a little thicker.
I was thinking maybe Mobil 1 5w50, M1 hm 10w40, M1 tdt 5w40 or maybe something Amsoil has (one of their 5w40 euro, or other 0/5/10 W 40/50) for top offs, or maybe the last half quart of the oil change plus top offs.
Ideas? Suggestions? Recommendations?