Which is better for a high-mileage engine?

Advanced Clean, if sludge is your concern. Its cleaning claim is tied to Sequence VH rocker cover sludge results. Extended Performance still protects for up to 25,000 miles and costs less.

Is the 25,000-mile interval realistic?

Mobil 1 rates it for 25,000 miles or 1 year, whichever comes first. Follow your owner's manual and oil life monitor, and check the level regularly on older engines.

Is Advanced Clean worth the extra $6?

Only if you want its sludge-cleaning emphasis. Otherwise Extended Performance gives a longer interval and a lower price for the same GF-7 spec.

Can I switch between them?

Yes. Both are 0W-20 full synthetics meeting ILSAC GF-7, so they are interchangeable at an oil change.

Do they both work in cold weather?

Yes. Both are 0W-20 and both list excellent cold-start and low-temperature performance.

Which lasts longer between changes?

Extended Performance, at up to 25,000 miles versus 20,000 for Advanced Clean.

Mobil 1 Extended Performance 0W-20 vs Mobil 1 Advanced Clean 0W-20 Motor Oil

Both are 0W-20 full synthetics from Mobil 1 with the same ILSAC GF-7 rating, so the real split is drain interval and price. Extended Performance is rated for up to 25,000 miles between changes and costs $39.99 at Amazon as of November 6, 2026. Advanced Clean is rated for up to 20,000 miles and costs $45.99 at Amazon as of the same date. Buy Extended Performance unless you specifically want the sludge-focused cleaning claim and don't mind paying more for a shorter interval.

Today the Mobil 1 Extended Performance 0W-20 costs $6.00 less at its best price.

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