98wfw Posted February 4, 2005 Share Posted February 4, 2005 Just got head gasket work done at 117k need suggestions for a good synthetic to use 98 forester 2.5 please indicate Number if its important. thanks for the suggestions in advance Quote Link to comment Share on other sites More sharing options...
ron917 Posted February 4, 2005 Share Posted February 4, 2005 Mobil 1 is excellent, and widely available. I'm running Mobil 1 10w-30 in my Outback. I may switch to 0w-40 or 5w-40 to quite the piston slap (Mobil 1 is a little thinner than other oils). Did you change your crank, cam, and oil pump seals with the headgasket? If not, there is a good chance they will start leaking if you switch to synthetic. The sythetic flows through tiny gaps better, and will clean off spooge that may be plugging a worn/cracked seal. Quote Link to comment Share on other sites More sharing options...
Crashton Posted February 5, 2005 Share Posted February 5, 2005 I use Mobile 1 5w30 in the winter & 10w30 in the summer in my 2000 Forester with 101,000 miles on her. Been using synthetic since 8,000 miles or so. Some people say not to switch to synthetic on a high mileage motor. I switched a 88 4Runner to synthetic at 95,000 & put another 100,000 miles on without problems. Oh yes, my oil change intervules are 5,000 miles with a new Pure One Purolator filter. Quote Link to comment Share on other sites More sharing options...
Snowman Posted February 5, 2005 Share Posted February 5, 2005 Another vote for Mobil 1 here. Quote Link to comment Share on other sites More sharing options...
99obw Posted February 5, 2005 Share Posted February 5, 2005 My Walmart finally has Mobil 1 5w-40!!! I just grabbed six quarts. Woohoo!! I won't use the xw-30 Mobil 1 products, too thin, but the 5w-40 is gooooood stuff. Quote Link to comment Share on other sites More sharing options...
howards11 Posted February 5, 2005 Share Posted February 5, 2005 How about Valvoline Durablend ? Anyone using that ? ~Howard :-\ Quote Link to comment Share on other sites More sharing options...
Setright Posted February 6, 2005 Share Posted February 6, 2005 I am a Mobil 1 fan too. Have been for fifteen years. I would however like to vote AGAINST Redline engine oil. I made the mistake of trying some of their 10W40 and my otherwise quiet engine developed the famous piston slap. Even Mobil 1 5W-50 cant cure it :-( Quote Link to comment Share on other sites More sharing options...
Guest lothar34 Posted February 6, 2005 Share Posted February 6, 2005 Did you change your crank, cam, and oil pump seals with the headgasket? If not, there is a good chance they will start leaking if you switch to synthetic. The sythetic flows through tiny gaps better, and will clean off spooge that may be plugging a worn/cracked seal. I wonder if that's what happened to mine? I got a crank seal leak a couple months after I started using Mobil1. Quote Link to comment Share on other sites More sharing options...
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